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    Wyświetlanie 1-36 z 36
    Tytuł:
    Effect of burnishing on the corrosion properties of Ni-5%Al AND Ni-5%Al-15%Al2O3 coatings obtained by plasma spraying
    Autorzy:
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/245849.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    plasma spraying
    composite coating
    Ni-Al
    burnishing
    corrosion
    polarization test
    EIS test
    Opis:
    The Ni-5%Al alloy coatings and Ni-5% Al-15%Al2O3 composite coatings were obtained by plasma spraying method. The PN120 gun was used. The coatings onto a shaft made of austenitic stainless steel (X5CrNi 18-10) were sprayed. The coatings were subjected to turning, burnishing. The evaluation of corrosion properties were based on the measurements of corrosion current density and corrosion potential (polarization method), the charge transfer resistance and exponent of constant phase element impedance (electrochemical impedance spectroscopy method). Corrosion tests were performed in replacement seawater (3.5% sodium chloride solution). On the basis of studies, the effect of finishing type on the corrosion properties of plasma sprayed coatings has been demonstrated. The lowest corrosion current density was found for Ni-5% Al coatings after burnishing, icorr value equal to 0.96 A/cm2, and the charge transfer resistance was 27007 Ωcm2. The lowest resistance to corrosion of turned Ni-5%Al-15%Al2O3 composite coatings was observed. These coatings were characterized by the following parameters of corrosion process: icorr = 17.64 A/cm2, Rct = 2137 Ωcm2. Burnishing caused increased corrosion resistance of coatings. Due to reduced roughness and waviness are obtained reduction of the area of the actual burnished coatings compared to turned coatings. Thus, it is resulting in reduced values of corrosion current density. After finishing treatment, the plasma sprayed Ni-5%Al-15%Al2O3 coatings characterized by lower corrosion resistance compared to the alloy coating. The presence of the reinforcing phase in the coating promotes the increase of the porosity. The plasma sprayed coatings on nickel matrix had a tendency to localized corrosion in sodium chloride solution.
    Źródło:
    Journal of KONES; 2014, 21, 1; 273-280
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Texture of surface of coatings obtained using the "Casto-Dyn 8000",torch, after burnishing treatment
    Autorzy:
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/245991.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    flame spraying
    burnishing
    Ni-Al coating
    Ni-Al-Al2O3 coating
    torque pump
    Opis:
    The flame sprayed coatings are characterized by porosity, oxide inclusions presence and large real area of surface. In order to obtain adequate surface roughness coatings must be applied finishing. For this purpose, the turning and grinding are used. In the paper a burnishing to finishing flame sprayed coatings was proposed. Burnishing is not used during the processing of thermally sprayed coatings, as is commonly believed that this technology causes damage to coatings. The process of flame sprayed is a technology affordable and easy to implement. It does not require great skill of the operator. This method is not associated with expensive workstation equipment. It may therefore be used with success for the regeneration of machine parts by the crew of vessel engine room. Coatings of Ni-5% Al and Ni-5%Al-15%Al2O3 obtained by powder flame spraying were studied. Torch of "Casto-Dyn 8000" was used. After turning the average value of surface coatings roughness coefficient Ra =2.59 mi m (for Ni- 5%Al) mi m and Ra = 3.1mi m (for composite coating) was obtained. SRMD burnishing tool produced by "Yamato" company was used. Roller burnishing was performer on turning lathe. It was found that the increase in burnishing force and the reduction of burnishing speed and feed rate of less roughness of coatings are obtained. For Ni-5%Al coatings the lowest surface roughness, Ra = 0.3mi m was obtained after burnishing with the following parameters: the force - 1100 N, burnishing speed - 28m/min, feed - 0.08 mm/rev. During burnishing of Ni-5% Al-15% Al2O3 coatings applied force 700 N, Ra = 1.31 mi m was obtained. Greater burnishing force caused coatings damage. Burnishing compared to turning has positive influence on the curve shape of the material ratio. It was found that the parameters Rk and Rpk were reduced.
    Źródło:
    Journal of KONES; 2011, 18, 3; 413-420
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flame spraying "Roto-Teck 80" of Ni-Al and Ni-Al-Al2O3 coatings surface texture after roller burnishing
    Autorzy:
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/246267.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    thermal spay coatings
    burnishing
    roughness
    material ratio
    torque pump
    Opis:
    The process of flame sprayed is a technology affordable and easy to implement. It does not require greats kill of the operator. This method is not associated with expensive workstation equipment. It may the refore be used with success for the regeneration of machine parts by the crew of vessel engine room. Flame spray ed coatings are characterized by porosity, oxide inclusions presence and large real area of surface. In order to obtain adequate surface roughness coatings must be applied finishing. For this purpose, the turning and grinding are used. In the paper a burnishing to finishing flame sprayed coatings was proposed. Burnishing is not used during the processing of thermally sprayed coatings, as is commonly believed that this technology causes damage to coatings. Coatings of Ni-5% Al and Ni-5%Al-15%Al2O3 obtained by powder flame spraying were studied. Torch of "Roto-Teck 80" was used. After turning the average value of surface coatings roughness coefficient Ra = 3 mi m was obtained. SRMD burnishing tool produced by "Yamato" company was used. Roller burnishing was performer on engine lathe. It was found that the increase in burnishing force and the reduction of burnishing speed and feed rate of less roughness of coatings are obtained. For Ni-5%Al coatings the lowest surface roughness, Ra = 0.3 /mi m was obtained after burnishing with the following parameters: the force - 1100 N, rate - 28m/min, feed - 0.08 mm/rev. During burnishing of Ni-5% Al-15% - A12O3 coatings applied force 700 N, Ra = l pm was obtained. Greater burnishing force caused coatings damage. Burnishing compared to turning has positive influence on the curve shape of the material ratio. It was found that the parameters Rk, Rpk and Rpk were reduced.
    Źródło:
    Journal of KONES; 2010, 17, 4; 477-484
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of burnishing on surface texture of Ni - Al plasma sprayed coatings
    Autorzy:
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/247985.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    plasma spraying
    burnishing
    Ni-Al coating
    torque pump
    Opis:
    The purpose of this study was the selection of roller- burnishing parameters of surface Ni-Al coatings obtained by "PN 120" plasma torch. Coatings with low surface roughness could be applied as layers increase the service life of torque pumps shaft used on vessels in the sea water systems. After turning, the average surface roughness of plasma sprayed Ni-5% Al coatings was Ra = 0.77 mi m. Their average hardness was equal to the 253 HV 2. It was comparable to the hardness of flame sprayed Ni-Al coatings after the burnishing. Before machining, plasma sprayed alloy coatings were characterized by hardness 206 HV 2. After pre-treatment, plasma sprayed Ni-Al coatings were burnishing. Burnishing parameters were as follows: Vn=28.26 m/min, Fn=1100N, fn=0,08m/rev. Burnishing reduces the surface roughness of coatings as compared to machining. The arithmetical mean deviation of the assessed profile of machined coatings was 0.78 mi m. After the plastic working, the Ra parameter was reduced to a value of 0.28 mi m. Total height of profile of machined coatings was only 2.63 mim. After burnishing, the value of Wt decreased by 0.16 mi m, to the value of 2.47 mi m. Studies burnished surface topography of coatings of Ni-5% Al overlaid by "PN 120" torch revealed the presence of defects stereometric structure. There is the folding. These folding are arranged in the direction of peripheral velocity vector. The observed high folding on the surface of alloy coatings sprayed by plasmatron were lower from the same geometric structure defects on the surface of coatings obtained by flame spraying methods. This follows from the fact that the plasma coating, after turning, characterized by higher hardness of the sprayed coating obtained by and "Roto-Teck 80" method. Thus, exhibit a lower propensity for plastic deformation. After plastic working of plasma coatings, decrease of parameters of the material ratio curve values were observed. For example, the reduced peak height of cut coatings were 1.38 mi m, after burnishing Rpk value fell to 0.23 mi m.
    Źródło:
    Journal of KONES; 2012, 19, 1; 377-384
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of burnishing on the contact fatigue of regenerative thermally sprayed coatings
    Autorzy:
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/241885.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    thermal spraying
    Ni-5%Al-Al2O3 coatings
    contact fatigue
    Opis:
    This study of the resistance to contact fatigue of Ni-5%Al alloy coatings and Ni-5%Al-15%Al2O3 composite coatings were evaluated. The coatings were prepared by flame spraying (Casto-Dyn DS 8000 torch) and plasma spraying (PN 120 plasma jet). The coatings were subjected to a finishing treatment: turning, burnishing and grinding. Depending on coatings phase composition and finishing treatment, the parameter mean values of surface roughness (Ra) were in the wide range of 0.28 to 2.61 m. The coatings after burnishing characterized by smallest of surface roughness. The largest value of the parameter Ra was observed in the case of coatings after turning. The presence of the reinforcing phase in the coating increases the surface roughness of thermally sprayed composite coatings. The hardness of coatings also depends on the finishing methods. The minimum hardness equal to 192 HV2 was found in the case of coatings of Ni-5%Al obtained by using a Casto-Dyn DS 8000 gas torch. Burnished Ni-5%Al-15%Al2O3 coatings obtained by plasma spraying characterized by hardness 291 HV2. Resistance of fatigue surface of thermally sprayed coatings on a SCF (standing contact fatigue) test stand was assessed. The test was designed based on the guidelines of the PN-80/H-04324 Polish standard. During the fatigue tests were provided constant contact of co-acting parts, without slipping. Based on the survey it was found that the plasma sprayed coatings (PN120 plasma-jet) have a greater resistance to fatigue then the coatings obtained by flame spraying Casto-Dyn DS 8000 torch. Composite coatings of Ni-5%Al- 15%Al2O3 are more resistant to contact fatigue, compared to the alloy coatings of Ni-5%Al. Burnishing increases the fatigue resistance of coatings when compared to turning. Burnished and polished surfaces are characterized by a similar contact fatigue resistance.
    Źródło:
    Journal of KONES; 2013, 20, 1; 309-315
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of genetic algorithm and Fourier coefficients (GA-FC) in mechanism synthesis
    Zastosowanie algorytmu genetycznego i współczynnika Fouriera (GA-FC) w syntezie mechanizmów
    Autorzy:
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/281661.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    algorytmy ewolucyjne
    synteza mechanizmów
    evolutionary algorithms
    mechanism synthesis
    Opis:
    The paper concerns synthesis of a four-bar linkage as a curve generator. Fourier coefficients of the curvature are applied to represent a closed curve. A genetic algorithm (GA) was adapted to solve the problem. The proposed method was successfully verified by many examples.
    Rozważanym zagadnieniem jest synteza czworoboku przegubowego jako generatora krzywej. Zastosowano nowy sposób reprezentowania krzywej zamkniętej za pomocą współczynników Fouriera. Do rozwiązania zadania został zaadaptowany algorytm genetyczny. Proponowana metoda została z sukcesem przetestowana na przykładach.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2008, 46, 2; 395-411
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The quantitative analysis of the effect of the porosity, the volume of fraction of reinforcing phase and the thermal spraying methods, on corrosion properties of composite coatings in marine environment
    Autorzy:
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/244816.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    thermal spraying
    corrosion property
    composite coating
    Opis:
    In the paper an assessment of the impact of the thermal spray methods, porosity and the volume fraction of reinforcing phase (aluminium oxide) on the corrosion properties (corrosion current density and corrosion potential) of Ni-5%Al alloy coatings and Ni-5%Al-Al2O3 composite coatings reinforced by particle dispersion was presented. The volume fraction of reinforcing phase in the coatings was 15, 30 and 45%. These materials would potentially be used in the shipbuilding industry as regenerative coatings for repair of marine pump shafts. The samples (substrates) were made of carbon C45 (0.45%C) steel. For thermal spray of coatings, two oxy-acetylene (Casto-Dyn DS 8000 and Roto-Tec 80) torches and one plasma gun (PN120) were deployed. The two distances 100 mm and 150 mm from the nozzle onto the substrate were used. In addition, the two substrate temperatures 150°C or 250°C were applied. Corrosion properties of the coatings were tested in a replacement seawater (3.5% NaCl) by polarization curves method. It has been found that among the independent variables considered: a method of thermal spraying, fraction of reinforcing phase and porosity, the last mentioned has the greatest influence on the corrosion properties of thermally sprayed coatings on the matrix of Ni-5% Al. The value of the corrosion potential of coatings depended on the used thermal spray method. It has been found that the more modern method of producing coatings of the higher velocity of the coating material in a sprayed stream has a significant positive effect on the porosity of the coatings. The presence of the reinforcing phase (Al2O3) in composite coatings contributes to a reduction of value of the corrosion current density and increase of the corrosion potential value.
    Źródło:
    Journal of KONES; 2016, 23, 1; 321-327
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ parametrów technologicznych operacji powierzchniowej obróbki plastycznej na strukturę geometryczną powierzchni czopów wału wykonanego ze stali austenitycznej
    The effect of technological parameters of surface plastic working on the geometric structure of the surface of a neck of a shaft made from austenitic steel
    Autorzy:
    Starosta, R.
    Labuda, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/211456.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Obróbki Plastycznej
    Tematy:
    obróbka plastyczna
    nagniatanie
    stal odporna na korozję
    warstwa wierzchnia
    pompy krętne
    plastic working
    burnishing
    corrosion resistant steel
    surface layer
    torque pumps
    Opis:
    Na statkach, w instalacjach wody zaburtowej (np. instalacji chłodzenia silników), często wykorzystuje się pompy krętne. Ze względu na trudne warunki ich pracy do budowy tego rodzaju pomp stosuje się materiały odporne na zużycie kawitacyjne oraz korozję elektrochemiczną wywoływaną przez wodę morską. W przypadku wałów pomp najczęstszą niesprawnością jest zużycie czopów (korozyjne, cierne i zmęczenie stykowe) w miejscu montażu uszczelnień (dławnic). Zwiększenie trwałości eksploatacyjnej pomp krętnych można osiągnąć dzięki zastosowaniu obróbki nagniataniem jako technologii, która umożliwia uzyskanie stosunkowo małej chropowatości powierzchni przy jednoczesnym jej umocnieniu zgniotem. Celem badań było wyznaczenie optymalnych parametrów procesu nagniatania i zmniejszenie chropowatości powierzchni czopów wałów okrętowych pomp krętnych wykonanych ze stali odpornej na korozję X5CrNi18-10. Proces nagniatania przeprowadzono nagniatakiem jednorolkowym SRMD firmy Yamato. Podczas nagniatania zastosowano zróżnicowane następujące parametry procesu technologicznego: siła nagniatania, prędkość nagniatania, posuw oraz liczba przejść. Istotny wpływ na zmniejszenie chropowatości powierzchni nagniatanych czopów ma posuw i siła nagniatania. Prędkość nagniatania oraz liczba kolejnych przejść nagniataka wpływają w niewielkim stopniu na gładkość obrabianych powierzchni. Stosując mały posuw fn = 0,13 mm/obr oraz siłę Fn 1,1 kN uzyskano chropowatość powierzchni o Ra= 0,07 m. Następne przejścia narzędzia powodują nieduże zmniejszenie chropowatości. Przyczyniają się one do uzyskania geometrii powierzchni o kształcie krzywej udziału materiałowego zapewniającej hipotetycznie zwiększenie odporności na zużycie cierne jak i polepszenie szczelności wału we współpracy z dławnicą okrętowej pompy krętnej.
    Torque pumps are frequently used in the outside water installations of ships (e.g. engine cooling installations). Due to the difficult conditions of their operation, materials resistant to cavitation wear and electrochemical corrosion caused by sea water are used in their construction. In the case of pump shafts, the most frequently occu-ring malfunction is shaft neck wear (corrosion, friction, and contact fatigue) in the vicinity of the seals (pac-king). An increase in the exploitation durability of torque pumps can be achieved thanks to the process of burnishing technology, which makes it possible to achieve a relatively small surface roughness with simultaneous strengthening of the surface through deformation hardening. The purpose of studies was to determine optimal process parameters of the burnishing process and to decrease surface roughness of shaft necks of ship torque pumps made from corrosion resistant steel X5CrNi18-10. The burnishing process was carried out using a SRMD one-roller burnishing tool of the Yamato company. During burnishing the following varied technological process parameters were applied: burnishing force, burnishing speed, advance, and the number of passes. Advance and burnishing force has a significant effect on the decrease of surface roughness of burnished shaft necks. Burnishing speed and the amount of subsequent passes of the burnishing tool have an insignificant effect on the smoothness of worked surfaces. For a small advance of fn = 0.13 mm/rot and a force of Fn 1.1 kN, a surface roughness of Ra= 0.07 m was obtained. Further tool passes cause a slight decreases in roughness. These passes contribute to the achievement of a surface geometry with the shape of the Abbott-Firestone curve hypothetically ensuring an increase in abrasive wear resistance as well as improvement of shaft tightness in cooperation with the packing of the ship torque pump.
    Źródło:
    Obróbka Plastyczna Metali; 2011, 22, 2; 121-139
    0867-2628
    Pojawia się w:
    Obróbka Plastyczna Metali
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badanie wpływu wielkości odkształcenia plastycznego na wybrane właściwości powłok niklowo-aluminiowych
    Investigation of deformation size plastic effect at the selection properties at the nickel-aluminum coatings
    Autorzy:
    Dyl, T.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/211564.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Obróbki Plastycznej
    Tematy:
    współczynnik umocnienia
    współczynnik chropowatości
    walcowanie powłok stopowych
    coefficient strain hardening
    surface roughness coefficient
    rolling coating alloy
    Opis:
    W artykule przedstawiono wyniki badań doświadczalnych wpływu wielkości odkształcenia plastycznego na umocnienie i właściwości stereometryczne warstwy powierzchniowej, walcowanych płaskich wyrobów stalowych z naniesioną powłoką stopową Ni-5%Al metodą natryskiwania płomieniowego. Procesy wytwarzania i regeneracji wyrobów z naniesioną powłoką cieszą się uznaniem wśród inżynierów technologów, ze względu na możliwość zwiększenia właściwości eksploatacyjnych warstwy powierzchniowej (wytrzymałościowe, trybologiczne, antykorozyjne i dekoracyjne). Badania wykonano dla gniotów rzeczywistych h = 0,06 i h = 0,12. Badania przyczepności powłok nie wykazały negatywnego wpływu procesu walcowania na ich adhezję do stalowego podłoża. Uzasadnione jest zatem ze względów ekonomicznych i technologicznych, zastosowanie wykańczającej obróbki plastycznej w zamian za obróbkę skrawaniem.
    The influence of intensity strain on strain hardening and stereometrical properties at the Ni-5%Al coating alloy was presented. Processes of productions of manufactured product with apply a coating be glad recognition among engineers. It present analysis of experimental research of process rolling double-layer metal plate (steel C45 and Ni-5%Al coating alloy). It carry experimental research for two real rolling reduction h = 0.06 and h?= 0.12. In the paper chance for practical application of plastic working to finishing coating was analyzed. Alloy coatings Ni-5%Al were obtain by flame spraying. These coatings have monophase structures of solid solution. Steel (C45) samples with alloy coatings were cold and hot (950 oC) rolling. During of plastic working was used effective force to obtain of real rolling reduction. After plastic working the adhesion reduction, cracks on the surface and cross- sections of coatings deposited on steel base wasn't observed. The largest value of strain hardening of alloy coating Ni-5%Al was stated after cold rolling of roll face diameter 200 mm. The metallic coatings obtain by thermal flame spraying be characterized by big surface roughness. Studying coating was received average value of parameter of Ra0=13,3žm. The plastic working caused decrease surface roughness. Minimum value of average arithmetical roughness (Ra1) Ni-5%Al alloy coating for real rolling reduction ( h = 0.12) and maximum value of surface roughness coefficient (ChRa) was observed after cold rolling of roll face diameter 200 mm and after hot rolling of roll face diameter 150 mm.
    Źródło:
    Obróbka Plastyczna Metali; 2008, 19, 2; 37-43
    0867-2628
    Pojawia się w:
    Obróbka Plastyczna Metali
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Obróbka wykańczająca natryskiwanych płomieniowo powłok Ni-Al, ocena zużycia borazonowych płytek skrawających
    Finishing of flame sprayed Ni-Al coatings and an estimate of CBN insert wear
    Autorzy:
    Starosta, R.
    Dyl, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/189040.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    natryskiwanie płomieniowe
    powłoki Ni-Al
    CBN
    flame spraying
    Ni-Al coatings
    CBN insert
    Opis:
    Obróbkę wykańczającą natryskiwanych płomieniowo powłok Ni-5%Al prowadzono poprzez bardzo dokładne toczenie wzdłużne za pomocą noży tokarskich wyposażonych w borazonowe płytki skrawające. W pracy wyznaczono szerokość pasma zużycia powierzchni przyłożenia i natarcia ostrza noża tokarskiego dla kwadratowej i trygonalnej płytki skrawającej przy zachowaniu stałej spiralnej długości skrawania.
    Highly accurate finishing of flame spraying Ni-5%Al coatings was carried out using sliding turning by tool with CBN cutting inserts. Flank (VB) and attack (KB) wear indexes of square and trigonal cutting inserts while maintaining a constant spiral cutting length (SCL) were determined.
    Źródło:
    Tribologia; 2011, 4; 245-252
    0208-7774
    Pojawia się w:
    Tribologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optymalizacja parametrów napawania stali C45E drutem CastoMag 4554S z wykorzystaniem metody Taguchiego
    Optimization of Parameters of Pad Welding steel C45E by Wire CastoMag 4554S using Taguchi Method
    Autorzy:
    Woźniak, P.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/342005.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni
    Tematy:
    metoda Taguchiego
    optymalizacja
    parametry napawania
    Taguchi method
    optimization
    pad welding parameters
    Opis:
    Artykuł jest wstępem do serii badań, pozwalających dobrać najlepsze parametry napawania metodą GMA stali C45E drutem CastoMag 4554S. Próbki stali zostały przygotowane oraz wstępnie podgrzane do temperatury 300°C. Plan eksperymentu opracowano na podstawie metody Taguchiego. Celem przeprowadzenia optymalizacji był dobór odpowiednich parametrów technologicznych i uzyskanie najmniejszego udziału materiału podłoża w napoinie. Do analizy wyników wykorzystano regresję wielokrotną oraz metodę Taguchiego.
    The article is an introduction to a series of investigations that will allow to choose the best parameters of pad welding with GMA method of steel C45E by wire CastoMag 4554S. Steel samples were prepared and preheated to 300 degrees Celsius (C). The plan of experiment was developed on the basis of the Taguchi method. The purpose of the optimization was to select appropriate technological parameters and to obtain the smallest proportion of the substrate material in the padding weld. Analysis of the results was performed using multiple regression and Taguchi method.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Gdyni; 2017, 100; 187-199
    1644-1818
    2451-2486
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Gdyni
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Corrosion of Ni-5 percent Al AND Ni-5 percent Al-Al2O3 flame sprayed coatings of "CastoDyn 8000" torch in 0.01 M H2SO4 and 3.5 percent NaCl solutions
    Autorzy:
    Starosta, R.
    Czoska, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/246279.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    thermal spray coating
    composite coating
    corrosion
    torque pomp
    Opis:
    One of methods of regenerating parts of machines is flame thermal spraying, which can be used by ship engine room crew. This method does not require great skill of the operator and is not associated with expensive workstation equipment. Flame sprayed coatings are characterized bv porosity and the presence of oxide inclusions. The presence of pores affects negatively on the corrosion properties of coatings. There is a corrosive environment which may be passed thmugh the pores of the coating to the substrate. This phenomenon is especially dangerous in case of applying cathodic coatings (copper, copper alloys and nickel alloys). The substrate corrosion may then proceed below coating. In the paper researches results of corrosion properties of Ni-Al alloy and Ni-Al-Al2O3 composite coatings were presented. Coatings were obtained by flame spraying of "Casto-Dyn 8000" torch. The studies in 0.01 M H2SO4 and 3.5 NaCl (artificial sea water) environments were realized. Measurements were made following methods: polarization and impedance spectroscopy. Rated coatings are more resistant to the 3.5% NaCl environment than the 0.01 M H2SO4. Corrosion current density for alloy coatings in artificial seawater was 7 miA/cm2 and 232 miA/cm2 environment acidic. Impedance spectroscopy studies showed that the alloy coatings are characterized by more than four times greater resistance in sodium chloride solution than in sulphuric acid solution. Curves flattened in the Nyquist plots may indicate that the appearance of products of corrosion coatings in the pores of the samples during exposure to sea water substitute. The value of corrosion potential in an environment of 3.5% NaCl is about 200 mV lower than 0.01 MH2SO4. Composite coatings Ni-Al-Al2O3 were characterized by a lower corrosion current densities and increased resistance than Ni-Al coatings. This is connected with the operation of non-conducting barrier electrim particles of alumina.
    Źródło:
    Journal of KONES; 2010, 17, 4; 471-476
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of flame heating parameters on the hardness of hardened C45 steel
    Autorzy:
    Dargacz, M.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/244877.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    hardening
    flame heating
    multiple regression
    mathematical optimization
    Taguchi method
    hartowanie
    ogrzewanie płomieniem
    wielokrotna regresja
    optymalizacja matematyczna
    Metoda Taguchi
    Opis:
    In this article, the impact of selected parameters of heating using a gas torch on the hardness of hardened alloy steels C45 was presented. The staff of the ship's engine room sometimes uses flame hardening during casual repairs of the machines weared as a result of operational extortions. The purpose of emergency repairs is to restore the possibility of work of ship machinery and equipment for the duration of the vessel's journey. An acetylene-oxygen torch was used to heat the steel. As the analysed parameters of the technological process, the heating time and the distance between the nozzle and the workpiece were selected. The values of the mentioned parameters have been selected so that the temperature of hardened steel is in the range from 800 to 1250 oC. The following values of the adopted machining parameters were used: the heating time was 60, 85 and 110 seconds, while the distance of the torch nozzle was 10, 20 and 30 mm. After heating, the samples were cooled by immersing in water. The research was based on a randomized orthogonal experiment plan. The purpose of the quantitative assessment of the influence of heating parameters on the hardness of hardened C45 steel, done statistical analysis variance analysis, multiple regression and mathematical optimization by the Tagichi method. Conducted tests and statistical analysis showed a significant effect of selected parameters of flame heating on the hardness of hardened C45 steel. The greatest influence on the hardness of the steel is the distance between the nozzle and the workpiece. The highest value of hardness was obtained using the following parameters of flame hardening: nozzle distance 30 mm, heating time 60 seconds.
    Źródło:
    Journal of KONES; 2018, 25, 1; 41-47
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics of an inertially driven robot
    Autorzy:
    Fritzkowski, P.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/127744.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    motion control
    movable internal mass
    vibration-driven robot
    sterowanie ruchem
    ruchoma masa wewnętrzna
    Opis:
    An inertially-driven system that slides on a rough horizontal plane due to periodic oscillations of two internal bodies is studied. Three-phase internal motions with piecewise-constant relative accelerations are considered. It is shown that an always forward motion of the robot can be achieved. The effect of the model parameters on the displacement and average velocity of the system is analyzed.
    Źródło:
    Vibrations in Physical Systems; 2018, 29; 1-9
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selection of cutting parameters of turning the Ni-Al and Ni-Al-Al2O3 flame sprayed coatings
    Autorzy:
    Starosta, R.
    Chabowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/246281.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    thermal spray coatings
    coating turning
    CBN
    Opis:
    The process of flame sprayed is a technology affordable and easy to implement. It does not reąińre great skill of the operator. This method is not associated with expensive workstation equipment. It may therefore be used with successfor the regeneration of machine parts bv the crew of vessel engine room. Flame sprayed coatings are characterized by porosity, oxide inclusions presence and large real area of surface. In order to obtain adequate surface roughness coatings must be applied finishing. For this purpose, the turning and grinding are used. In the paper a turning to finishing flame sprayed coatings was proposed. Coatings of Ni-5%Al and Ni-5% Al-15% Al2O3 obtained by powder flame spraying, were studied. Torch of "Casto-Dyn 8000" was used. In practice, the substrate and the t herma l ly sprayed coating are processed by the same cutting tool. For example, Messner Eutectic Castolin company offers r\vo types of tools: "Rototool II/" (square insert) and "Rototool III" with a removable cylindrical insert. Average surface roughness of coating after machined tool "Rototool II" was Ra = 3 mi m. This surface often requires grinding. The different tool geometry was suggestedfor better texture of coatings surface. Workpiece was machined by tool with CBN insert WNGA080408S01030A mounted in holder DWLNRL-2525M08 (cutting inserts beta = 80°, approach angle Kr = 95°, nose radius - 0.8 mm, relief angle alfa = 6°, rake angle gamma= -6°). The influence of cutting speed, feed rate, depth of turning on the coating surface roughness was estimated. The following cutting parameters: cutting speed Vc = 45-214 m/m in, feed rate f = 0.06-0.2 mm/rev, depth of cut ap = 0.05-0.3 mm. The lowest value of the roughness of the alloy (Ra = 0.5 mi m) and composite (Ra = 0.8 mi m) coatings were obtained by using cutting parameters: Vc = 214 m/min, f= 0.06 mm/rev, ap = 0.4 mm.
    Źródło:
    Journal of KONES; 2010, 17, 4; 463-469
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of measurement method for assessing stereometric structure of surface
    Autorzy:
    Pelc, A.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/245502.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    top layer
    roughness
    contact profilometer
    confocal laser microscope
    surface topography
    Opis:
    The article presents the influence of measuring methods of surfaces topography evaluation. Surface topography was measured using a mechanical, contact method by Hommel Tester T-8000-R60 profilometer (Gdynia Maritime University) and using the contactless, optical method by Olympus Lext OLS4100 Confocal Laser Scanning Microscope (Gdynia Maritime University). A pattern of roughness grade 4 sample was studied (standards PN-58/M-02425 (Ra=10 μm, Rz=40 μm)). Seven measurements were made on each of devices, resulting in a more accurate stereometric image of the sample surface. The area of the test was 1.5×1.5 mm. The radius of the edge of the blade imaging the surface used in the contact method was 2 μm. In the case of the optical method, the test sample surface was subjected to a laser light 405 nm long. This article describes the principle of used measuring instrument operation and their advantages and disadvantages. The results and descriptive statistics (Mann–Whitney U test, Kolmogorov–Smirnov test) of surface altitude parameters, such as Sa, Sp, Sq, Sv, Sz. There were statistically significant differences in topography values between measurements by T-8000 profilometer and Confocal Laser Scanning Microscope. It was noted that the values of the parameters Sa, Sq are higher with the T-8000 profilometer as a measuring device. The parameters Sp, Sv, Sz have a higher value, when measured on a Confocal Laser Scanning Microscope.
    Źródło:
    Journal of KONES; 2017, 24, 2; 177-182
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the impact of the technological parameters pad welding steel C45E wire castomag 4554S on geometry padding weld method Taguchi
    Autorzy:
    Woźniak, P.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/246091.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    pad welding
    regression
    analysis
    GMA
    padding weld
    Opis:
    Using the pad welding technique it is possible to regenerate machine parts or improve surface properties such as abrasion, corrosion and aging resistance. The regeneration process with the use of pad welding can be performed using the same equipment, which we use for welding. Metals and their alloys with required properties in the form of wire, rod or powder are selected for the additional material. To ensure optimum processing conditions and economic efforts should be made, while providing a high deposition efficiency for the small amount of metal in the pad weld substrate. The pad welding process for the test subject should be carried out by preheating to evaporate the moisture and reduce the porosity of the weld. This treatment is required depending on the carbon equivalent. This article is an introduction to a series of investigations that will allow you to choose the best parameters of pad welding GMA (gas metal arc) method, steel C45E with wire CASTOMAG 4554S. Steel samples were prepared and preheated to 300°C. Using the orthogonal experiment plan, the influence of selected parameters on the geometry and depth of fusion was determined. The analysis was based on current and wire feed speed. The test was carried out for three current values: 60, 75, 90 A and wire feed rate of 1.5, 2, 2.5 m/min. The purpose of the analysis was to select appropriate technological parameters. Obtaining the smallest share of the base material in the weld pad and impact assessment parameters for welding seam geometries. For the analysis of the results of multiple regression was used.
    Źródło:
    Journal of KONES; 2017, 24, 2; 301-306
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The study of linear correlation between surface roughness parameters and adhesion of flame sprayed coatings
    Autorzy:
    Mikuliszyn, J.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/246506.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    flame spraying
    adhesion
    roughness parameters
    Ni-5%Al coating
    correlation
    Opis:
    Adhesion is one of the reasons for limiting the use of thermally sprayed coatings. Many factors influence the adhesion of thermally sprayed coatings, for example: quality of the workmanship of surface preparation, method of thermal spraying, processing parameters, and the temperature of the preliminary preheat substrate, properties of the substrate and coating materials. Another one is the surface roughness. Attempts are made to use surface roughness parameters (e.g. Ra, Rz, Rq, Rku, Rsk) for prediction of adhesion of thermally sprayed coatings. However, most often these attempts end in failure. This article discusses the task of assessing the linear correlation between the twelve parameters of roughness or material ratio of various surface profiles and strength bond of coatings. For analysis, the following parameters were selected: Rz, Ra, Rq, Rsk, Rt, RSm, Rp, Rv, Rku, Rmr (50%), Rk, Rpk, Rvk. The steel substrates (S185) were machined by abrasive machining. The surface roughness of the steel substrate ranged Rz = 1.89-5.34 mm. Nickel-based coatings were applied by flame spraying by the Casto Dyn DS 8000 torch. Adhesion of coatings was measured by pull – off method. The flame sprayed coatings were characterized by adhesion to the steel substrate in the range of from 5.53 MPa to 8.28 MPa. The highest value of the correlation coefficient (Pearson – R)between parameters Rp, Rpk, and adhesion of thermally sprayed coatings were found. The coefficient R was equalto the 0.83, and the coefficient of determination R2 = 0.7. The lowest value of the correlation coefficient was found for the Rku roughness parameter amounting to 0.37. In the measurements carried out, it can be concluded that the prediction of adhesion of the coatings according to the roughness of the substrate, should be carried out by use the parameters characterizing the peaks height of roughness profile.
    Źródło:
    Journal of KONES; 2016, 23, 1; 223-229
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of finishing on the corrosion properties of flame sprayed Ni-5%Al and Ni-5%Al-Al2O3 coatings
    Autorzy:
    Charchalis, A.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/247338.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    flame spraying
    composite coating
    Ni-Al
    burnishing
    corrosion
    potentiodynamic test
    EIS test
    Opis:
    The Ni-5%Al alloy and Ni-5% Al-Al2O3 composite coatings were obtained by a flame spraying method, “Casto- Dyn DS 8000” torch was used. The coatings onto a substrate made of austenitic stainless steel (X5CrNi18-10) were sprayed. The coatings were subjected to turning, burnishing and grinding. The evaluation of corrosion properties were based on the measurements of direct current (potentiodynamic method) and the alternating current (EIS method). Corrosion tests were performed in a 3.5% sodium chloride solution. On the basis of studies, the effect of finishing type on the corrosion properties of flame sprayed coatings has been demonstrated. The lowest corrosion current density was found for Ni-5%Al coatings after burnishing, icorr value equal to 0.76 μA/cm2, and the charge transfer resistance was 31063 Ω/cm2. The lowest resistance to corrosion of grinded Ni-5%Al-Al2O3 composite coatings was observed. These coatings were characterized by the following parameters of corrosion process: icorr = 14.01 μA/cm2, Rct = 3260 Ω/cm2. Burnishing caused increased corrosion resistance of both coatings. Due to reduced roughness and waviness are obtained reduction of the area of the actual burnished coatings compared to turned coatings. Thus, it is resulting in reduced values of corrosion current density. After finishing treatment, the thermally sprayed Ni-5%Al-15%Al2O3 coatings characterized by lower corrosion resistance compared to the alloy coating. The presence of the reinforcing phase in the coating promotes the increase of the porosity. Burnishing does not cause a significant change in porosity of the coating. The flame sprayed coatings on nickel-based have a tendency to localized corrosion in seawater environment.
    Źródło:
    Journal of KONES; 2014, 21, 4; 29-36
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of finishing on the tribological properties of plasma sprayed MMC coatings
    Autorzy:
    Charchalis, A.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/242057.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    plasma spraying
    composite coating
    MMC
    friction test
    T05 machine test
    Opis:
    During operation of marine pumps, one of the most common disability is tribological wear of shaft neck cooperating with the gland. In the practice, worn shafts are exchanged for new or are regenerated by chromium plating, padding or thermally sprayed of ceramic coatings, mainly Al2O3 In this article, the use of plasma sprayed Ni-5% Al-15%Al2O3 composite coatings were proposed. The surfaces of coatings by turning and burnishing treatments were shaped. Tribological properties of composite materials are dependent on the proportion and size of the reinforcing phase particles contained in a metal matrix. A reinforcement composite with very small dimensions and the amounts may result in increased wear and increase the coefficient of friction. It is therefore important to check whether the advisable of phase composition will not adversely affect the wear of the composite and the cooperating the part. The presence of a 15% volume fraction of the alumina particles on the selected tribological properties of the Ni-5% Al matrix composite coatings were evaluated. In order to assess the effect of the applied tapes of finishing on wear of MMC coatings, the tribological tests were performed on the "T05" machine with head roll- piece type. It has been found that the burnishing favours a lower wear of composite coating and the cooperating element compared to the coatings after turning treatments. At the same time observed more than ten times less wear intensity of MMC coatings in the initial time of friction, which may indicate a shorter time needed to grind of cooperating elements.
    Źródło:
    Journal of KONES; 2016, 23, 1; 91-97
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model and dynamical analysis of a tattooing device
    Autorzy:
    Sarbinowski, F.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/127882.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    nonlinear dynamics
    vibrations
    design optimization
    tattoo
    dynamika nieliniowa
    drgania
    optymalizacja konstrukcji
    tatuaż
    Opis:
    The paper presents the physical model of the tattooing device. The model is described by three degrees of freedom and a series of linear and nonlinear dynamic parameters and excitation, whose values are determined – depending on the available data and resources – by analytical, numerical and experimental methods. There are also presented a solution of motion equations and the assessment of the impact of individual parameters on the nature of solutions, and moreover, it is indicated a modification of the structure, the use of which results in decrease the amplitudes of the body structure vibrations.
    Źródło:
    Vibrations in Physical Systems; 2018, 29; 1-9
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improving the quality of technological surfaces of machines of composite coatings
    Autorzy:
    Dyl, T. C.
    Starosta, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/243120.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    composite coatings
    flame spraying
    surface finishing
    technological quality
    Opis:
    Nickel matrix coatings were sprayed by the Casto-Dyn 8000 torch on a steel substrate, and then subjected to straight turning. Determining of the optimum geometry of indexing is now synonymous with the selection of the optimum shape and dimensions of the insert and of an appropriate holder. According to cutting board, it was selected square, triangular, trigon inserts, made of carbide and of cubic boron nitride (borazon). Machining of nickel-based coatings was carried out for the cutting speed vc = 214 m/min in the case of treatment with borazon inserts, vc = 107 m/min in case of plates treated with tungsten carbide cutting, using the feed f =0.06 mm/rev and the depth of cut ap = 0.3 mm. Metal cutting the surface of steel samples coated with a composite coating containing 15% Al2O3 based on nickel, conducted for the cutting speed vc = 157 m/min when machining with borazon inserts and for vc = 83 m/min inserts with tungsten carbide for feed f = 0.06 mm/rev and depth of cut ap = 0.3 mm. Highly precise finishing of flame spraying composite and alloy coatings was carried out using turning by tool with borazon inserts. Flank (VB) and attack (KB) of turning tool wear while maintaining a constant length of spiral cutting (LSC) were determined. The effect of the shape and grade of inserts upon the geometric structure of the composite coatings and is considered in the paper. The article can determine the shape and grade of inserts is necessary to obtain sufficient quality of the shaft of centrifugal pumps with a composite coating.
    Źródło:
    Journal of KONES; 2014, 21, 1; 75-82
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nonlinear vibrations of rotating system near resonance
    Autorzy:
    Starosta, R.
    Sypniewska-Kamińska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/128157.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    nonlinear vibrations
    asymptotic methods
    resonance
    drgania nieliniowe
    metoda asymptotyczna
    rezonans
    Opis:
    The paper concerns analysis of nonlinear vibration of the rotating system consisted of two disks and shaft. The analytical multiple time scale method is applied to the analysis dynamics of the system near main resonance. The transition phenomenon depending on the value of the nonlinearity parameter is discussed. All the analytical results have been confirmed numerically.
    Źródło:
    Vibrations in Physical Systems; 2014, 26; 265-272
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of finish tooling influence on contact fatigue of steel applied to sea water pump shafts
    Autorzy:
    Charchalis, A.
    Starosta, R.
    Labuda, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/242173.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    contact fatigue
    burnishing
    corrosion resistant steel
    surface layer
    angular momentum pumps
    Opis:
    The article presents the research results referring to the analysis of the influence of finish treatment (lathing, grinding, burnishing) on the contact fatigue of steel applied to marine pump shafts. The research was performed on a roller 25mm in diameter made of X5CrNi18-10 (AISI304 L) stainless steel. The lathing process was carried out by means of a Sandvik Coromant cutting too, the grinding was done by grinding attachment to a lathe, whereas the process of burnishing was performed by SRMD burnisher by Yamato. Within the research, the optimalization of burnishing technological parameters was conducted on account of the minimalization of Ra surface roughness coefficient as well as the maximalization of SU degree of surface layer relative hardness. The multi criteria optimalization conducted by min-max method with regard to minimum surface roughness as well as maximum degree of surface layer hardness demonstrated that burnishing process should be carried out at the following technological parameters: burnishing force 1.1 kN, burnishing speed 35 m/min, feed 0.13 mm/rev. In addition, the influence of the burnisher passes number on the surface layer quality was determined. It is essential for this research to determine the burnishing influence on the service conditions which comprises the electrochemical corrosion research, friction wear and contact fatigue research. The paper will present the research results of contact fatigue examination of samples after finish machining.
    Źródło:
    Journal of KONES; 2011, 18, 2; 85-92
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-criteria optimization of steel burnishing parameters applied to marine pumps shaft pins
    Autorzy:
    Charchalis, A.
    Starosta, R.
    Labuda, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/243937.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    multicriteria optimization
    burnishing
    stainless steel
    surface layer
    angular momentum pumps
    Opis:
    The paper presents the research results of the possibilities of applying burnishing as steel finishing treatment for marine pumps shafts. X5CrNil810 (AISI304 L) corrosion resistant steel in the form of a roller 40 mm m diameter was used for the research. The burnishing process was carried out by SRMD single roll burnish by Yamato. During the process of burnishing various parameters of the technological process were used, that is burnishing force, speed and feed. Within the research, the optimization of burnishing technological parameters was conducted on account of the minimalization of Ra coefficient as we 11 as the maximalization of Su. The Slt coefficients values determining the degree of relative hardness of surface layer varied depending on the burnishing parameters applied and fluctuated around l% to 18%. However, the values of KRa coefficients defining the surface roughness reduction index were in the range of l to 15 as a result of burnishing. The object of the paper was to determine the optima! burnishing parameters in order to achieve the highest level of surface layer relative hardness and to decrease the surface roughness of marine pumps shaft pins made of stainless steel. The multi-criteria optimization conducted with the use of min-max method demonstrated that with regard to maximum surface hardness level, burnishing should be carried out at the following parameters of the technological process: burnishing force 1.1 kN, burnishing speed 35 m/min and feed 0.13 mm/rev.
    Źródło:
    Journal of KONES; 2010, 17, 3; 55-62
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of plastic working on the selection properties of the nickel -- aluminum alloy coatings
    Wpływ obróbki plastycznej na wybrane właściwości powłok stopowych nikiel - aluminium
    Autorzy:
    Starosta, R.
    Skoblik, R.
    Dyl, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/243077.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    technologia
    elementy silnikowe
    powłoki stopowe
    obróbka plastyczna
    technology
    engine parts
    alloy coating
    plastic tooling
    Opis:
    In the paper chance for practical application of plastic working to finishing coating was analyzed. Alloy coatings Ni-5%Al were obtain by flame spraying. These coatings have monophase structures of a solid solution. Steel (C45) samples with alloy coatings were cold and hot (950 oC) rolling and pressing. During of plastic working was used effective force to obtain of relative drafts s = 6%, 9%, 12% value. After finishing the adhesion reduction, cracks on the surface and cross- sections of coatings deposited on steel base wasn't observed. The largest value of strain hardening (Uhv ) of alloy coating Ni-5%Al was stated after pressing. The metallic coatings obtain by thermal flame spraying be characterized by big surface roughness. Studying coating was received average value of parameter of Ra = 13 jxm. The plastic working caused decrease surface roughness. Minimum value of Ra parameter was observed after hot rolling. It was found that maximal roughness was presented after pressing. The corrosion tests were performed in 0.01 M H2SO4 solution by potentiokinetic technique. The corrosion rate was dependent on method of plastic working. The increasing relative drafts resulted in rise corrosion current density and decrease in value of corrosion potential. Exception to the rule was found for hot rolling.
    W pracy przedstawiono wyniki badań nad możliwością zastosowania technologii obróbki plastycznej (walcowania na zimno i gorąco, oraz prasowania) do kształtowania wybranych właściwości natryskiwanych płomieniowo powłok stopowych Ni-5%Al o strukturze jednofazowej, a mianowicie granicznego roztworu stałego a, o maksymalnej 10% rozpuszczalności glinu w sieci krystalograficznej niklu. Celem pracy jest wstępna analiza możliwości zastąpienia tradycyjnie stosowanych metod wiórowej obróbki wykańczającej badanych powłok metodami powierzchniowej obróbki plastycznej. Próbki stalowe (C45) z nałożoną powłoką poddano procesowi walcowania na zimno uzyskując wartości gniotów względnych (s = 6, 9, 12%), walcowaniu na gorąco w temperaturze 950 oC (s = 6 i 12 %) oraz prasowaniu na zimno (s = 12%). Po obróbce plastycznej nie zaobserwowano złuszczeń i odwarstwień materiału na powierzchni rzeczywistej i przekroju poprzecznym powłok. Jakościowa ocena przyczepności powłok metodą tzw. szybkich zmian temperatury nie wykazała negatywnego wpływu odkształcenia plastycznego powłoki na badaną właściwość. Pomiary twardości wykazały, że największe umocnienie powłok nastąpiło po operacji prasowania na zimno (56%), najmniejsze po walcowaniu próbek na gorąco. Obróbka plastyczna przyczyniła się również do poprawy struktury stereometrycznej (chropowatości) powłok. Natryskiwane płomieniowo powłoki cechowały się znaczną wartością parametru Ra (13 jxm). Obróbka plastyczna spowodowała znaczny spadek wartości średniego arytmetycznego profilu nierówności. Pomiary profilometryczne wykazały, że najmniejsze wartości współczynnika Ra uzyskano dla powłok walcowanych na gorąco z największymi wartościami odkształcenia względnego, a najmniejsze dla próbek prasowanych. Polaryzacyjne badania korozyjne w środowisku 0,01 M H2SO4 wykazały, że w większości wypadków operacji obróbki plastycznej nastąpił wzrost gęstości prądu korozyjnego (small tilde 25%) jak i spadek potencjału korozyjnego (-10%). Wyjątkiem jest proces walcowania na zimno (s small tilde 12%), dla którego nie stwierdzono pogorszenia właściwości korozyjnych.
    Źródło:
    Journal of KONES; 2007, 14, 2; 441-448
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of the influence of burnishing parameters on steel X5CrNi1810 surface layers strengthening and roughness changes
    Ocena wpływu parametrów nagniatania na umocnienie warstwy wierzchniej i zmianę chropowatości powierzchni stali X5CrNi1810
    Autorzy:
    Labuda, W.
    Starosta, R.
    Dyl, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/243672.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    obróbka plastyczna
    nagniatanie
    stal odporna na korozję
    warstwa wierzchnia
    pompy krętne
    plastic tooling
    burnishing
    surface layers
    stainless steel
    angular momentum pump
    Opis:
    Angular momentum pumps are applied very often on ships. Because the pumps are working in hard conditions they are made from cavitation wear proof and electrochemical corrosion proof materials. The most popular damage of pump shaft is neck wear in place where seals are mounted. Burnishing as modern finish plastic tooling method makes possible getting high technological quality of elements. Because of many burnishing advantages it was proposed to shafts angular momentum pumps working instead of finish machining (finish turning, grinding, lapping). The goal was to estimate optimal burnishing parameters, which enable to receive biggest strengthening, and lowest roughness factor of angular momentum pumps shafts. The shaft necks are made from stainless steel X5CrNi1810. The tool, one - roller burnishing tool SRMD type produced by Yamato. Its axis is parallel to working shaft axis. During working technological parameters like force, velocity and feed were changed.
    Na statkach bardzo często wykorzystuje się pompy krętne. Ze względu na trudne warunki ich pracy do budowy tego rodzaju pomp stosuje się materiały odporne na zużycie kawitacyjne oraz korozję elektrochemiczną wywołaną przez wodę morską. W przypadku wałów pomp najczęstszą niesprawnością jest zużycie czopów (korozyjne, cierne i zmęczenie stykowe) w miejscu montażu uszczelnień (dławic). Obróbka nagniataniem jako nowoczesna metoda wykańczająca obróbki plastycznej umożliwia uzyskanie elementów maszyn o odpowiedniej jakości technologicznej. W związku z licznymi korzyściami stosowania obróbki nagniataniem proponuje się jej zastosowanie w zamian za wykańczającą obróbkę skrawaniem (toczenie wykańczające, szlifowanie, polerowanie) do wałów okrętowych pomp krętnych. Celem pracy było wyznaczenie optymalnych parametrów nagniatania dla uzyskania największego stopienia względnego umocnienia warstwy wierzchniej i zmniejszenia chropowatości powierzchni czopów wałów okrętowych pomp krętnych wykonanych ze stali nierdzewnej X5CrNi1810. Proces nagniatania przeprowadzono nagniatakiem jednorolkowym SRMD firmy Yamato, który charakteryzuje się równoległością osi części roboczej do osi obrabianego czopu. Podczas nagniatania zastosowano zróżnicowane parametry procesu technologicznego takie jak: siła nagniatania, prędkość nagniatania oraz posuw.
    Źródło:
    Journal of KONES; 2008, 15, 3; 259-267
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of the influence of passes number burnishing tool on ships pumps shafts surface layers strengthening and roughness changes
    Ocena wpływu liczby przejść nagniataka na umocninie warstwy wierzchniej i zmianę chropowatości powierzchni czopów wałów pomp okrętowych
    Autorzy:
    Charchalis, A.
    Starosta, R.
    Labuda, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/245735.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    obróbka plastyczna
    nagniatanie
    stal nierdzewna
    warstwa wierzchnia
    pompy krętne
    plastic tooling
    surface layers
    stainless steel
    angular momentum pump
    Opis:
    Angular momentum pumps are very often applied on ships. Because the pumps are working in hard conditions they are made from cavitation wear proof and electrochemical corrosion resistant materials. The most popular damage of pumps haft is neck wear in place where seals are mounted. Burnishing as modern finish plastic tooling method makes it possible to achieve high technological quality of elements. Because of many burnishing advantages, the method was proposed to angular momentum pumps shafts treatment instead of finish machining (finish turning, grinding, lapping). The tool used was a roller burnishing tool SRMD type produced by Yamato. During the technological process, optimum burnishing parameters were applied in order to ensure high degree of surface layer relative hardness and to decrease surface roughness of angular momentum pumps shafts made of stainless steel X5CrNH810. The object of the paper was to define the influence of burnishing tool passes number on the ships pumps shafts surface layers strengthening and roughness changes.
    Na statkach bardzo często wykorzystuje się pompy krętne. Ze względu na trudne warunki ich pracy do budowy tego rodzaju pomp stosuje się materiały odporne na zużycie kawitacyjne oraz korozję elektrochemiczną wywołaną przez wodę morską. W przypadku wałów pomp najczęstszą niesprawnością jest zużycie czopów (korozyjne, cierne i zmęczenie stykowe) w miejscu montażu uszczelnień (dławic). Obróbka nagniataniem jako metoda wykańczająca obróbki plastycznej umożliwia uzyskanie elementów maszyn o odpowiedniej jakości technologicznej. W związku z licznymi korzyściami stosowania obróbki nagniataniem proponuje się jej zastosowanie w zamian za wykańczającą obróbkę skrawaniem (toczenie wykańczające, szlifowanie, polerowanie) do wałów okrętowych pomp krętnych. Proces nagniatania przeprowadzono nagniatakiem jednorolkowym SRMD firmy Yamato. Podczas procesu technologicznego zastosowano zoptymalizowane parametry nagniatania, umożliwiające uzyskanie największego stopnia względnego umocnienia warstwy wierzchniej i zmniejszenia chropowatości powierzchni czopów wałów okrętowych pomp krętnych wykonanych ze stali nierdzewnej X5Cr Nil 8 10. Celem pracy było określenie wpływu liczby przejść nagniataka na poprawę twardości i chropowatości czopów wałów pomp okrętowych.
    Źródło:
    Journal of KONES; 2009, 16, 4; 43-50
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of the influence of the burnishing process on corrosion properties of steel applied to sea water pump shafts
    Autorzy:
    Labuda, W.
    Starosta, R.
    Charchalis, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/247208.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    plastic tooling
    burnishing
    surface layers
    angular momentum pump
    corrosion properties
    Opis:
    Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers and in bilge, ballast and fire installations. Very extensive use of angular momentum pumps on board is connected with their numerous advantages. During operation the wear of marine hull, the rotor and shaft seals take place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of lathing and burnishing on the corrosion properties of steel applied to marine pump shafts. The research was performed on a roller of 40 mm in diameter made of X5CrNi 18-10 (AISI304 L) stainless steel. The lathing process was carried out by means of a WNMG WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The process of burnishing was done by SRMD burnisher by Yamato. In addition, the influence of the burnisher passes number on the corrosion properties was determined. The paper will present the results of potentiodynamic research. To conduct the survey the Atlas 0531 EU & IA potentiostat will be used. Determination of parameters of the corrosion process will be executed on Elfit2 computer program.
    Źródło:
    Journal of KONES; 2011, 18, 4; 221-228
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of the influence of burnishing process on steel X5CRNIL810 internal stresses
    Autorzy:
    Labuda, W.
    Starosta, R.
    Zdunek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/247759.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    burnishing
    surface layers
    stainless steel
    angular momentum pump
    internal stress
    Opis:
    Angular momentum pumps are frequently applied on board ships. As the pumps are working in hard conditions they are made from materials resistant to cavitation wear and electrochemical corrosion. The most popular damage of pump shaft is neck wear in place where seals are mounted. Burnishing, as modern finish plastic tooling method, makes it possible to get high technological quality of elements. The proposed process of burnishing shaft pins is designed to increase the service life of marine seawater pump shaft installations, which should enhance the economic effect. Thanks to its numerous advantages burnishing was proposed to angular momentum pumps shafts tooling instead of finish machining (finish turning, grinding, lapping). The goal was to estimate optimal burnishing parameters which enable receiving biggest strengthening and lowest roughness factor of angular momentum pumps shafts. The tool used was one-roll burnishing tool SRMD type produced by Yamato. The aim of this study was to determine the internat stresses occurring in the subsurface layer after machining carried out, and after burnishing the surface of marine pump shaft pins made of X5CrNH810 stainless steel.
    Źródło:
    Journal of KONES; 2010, 17, 4; 265-270
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimizing of parameters dipping metallization of Taguchi method
    Autorzy:
    Woźniak, P.
    Starosta, R.
    Gruba, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/243741.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    metallization
    galvanizing
    Taguchi method
    optimizing
    Opis:
    Zinc coatings obtained by immersion metallization are an effective and economical way to protect against corrosion also for high carbon steels, foundry iron alloys. However, the difficulties encountered in surface preparation due to oxide contamination, as well as the presence of carbon (graphite) from the casting process or cast iron sludge, make cast irons zinc-plated by manufacturers reluctantly. The technological properties of the zinc baths and the technological properties of the coatings obtained vary considerably depending on the various impurity and alloying additives. The effect of zincing time significantly affects the thickness of zinc coatings and is dependent on the mass and thickness of the sample. The submerged object heats up faster or slower, depending on the thickness, and its temperature first reaches and then exceeds the melting point of the zinc. However, to avoid zinc over time, it is appropriate to respond to the current ISO standard EN 1461:2009, which specifies the minimum thickness of zinc coatings on steel substrate. The subject of the study was the optimization of parameters metallization using the Taguchi Method. The analysis took into account the influence of the immersion time and temperature of the bath of molten zinc on the thickness of the zinc coating. The test was conducted for three different times, i.e. 30, 60 and 150 seconds and for three different values of the temperature of the bath: 440, 460, 480 [°C]. In order to predict the thickness of the coating, multiple regression analysis was applied, which showed that the experiment was carried out correctly and falling within the limits of tolerance error.
    Źródło:
    Journal of KONES; 2017, 24, 3; 331-337
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vibration of the oscillator exchanging mass with surroundings
    Autorzy:
    Starosta, R.
    Sypniewska-Kamińska, G.
    Awrejcewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/127782.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    vibration of open systems
    mass variable
    reactive force
    drgania układów otwartych
    masa zmienna
    siła reakcji
    Opis:
    Vibration of two simple open systems (namely the linear mass-sprins oscillator and the mathematical pendulum) are investigated. During the motion, the body absorbs matter through its boundary. In both cases, mechanism of mass absorption is modeled as a perfectly 'inelastic' collision and constant rate of mass change is assumed. The paper is focused on the influence of mass change on the kinematic aspects of oscillations.
    Źródło:
    Vibrations in Physical Systems; 2016, 27; 333-338
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two approaches in the analytical investigation of the spring pendulum
    Autorzy:
    Sypniewska-Kamińska, G.
    Starosta, R.
    Awrejcewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/127972.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    nonlinear dynamics
    asymptotic method
    spring pendulum
    dynamika nieliniowa
    metoda asymptotyczna
    wahadło sprężynowe
    Opis:
    Dynamics of the nonlinear spring pendulum is analysed using two asymptotic approaches. The multiple scale method is commonly applied with using two time scales. The purpose of the research is to justify the introduction of an additional third scale. Results of the analysis clearly show that introducing the third scale improve correctness of the approximate analytical solution. The obtained results allow for qualitative and quantitative analysis of the behavior of the studied system with a high accuracy. Calculations are made both in the neighbourhood of the resonance and also far from it.
    Źródło:
    Vibrations in Physical Systems; 2018, 29; 1-11
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mentalne wspomaganie sportowców w epoce traktowania sportu jako towaru
    Mental supporting of sportsmen in era of sport as commodity
    Autorzy:
    Botwina, R.
    Starosta, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/12224.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Szczeciński
    Źródło:
    Aktywność Ruchowa Ludzi w Różnym Wieku; 2018, 1[37]
    2299-744X
    Pojawia się w:
    Aktywność Ruchowa Ludzi w Różnym Wieku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of nuclear techniques for characterization of materials surfaces : own investigations examples
    Autorzy:
    Sartowska, B.
    Piekoszewski, J.
    Waliś, L.
    Starosta, W.
    Barlak, M.
    Nowicki, L.
    Ratajczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/146726.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    conversion electron Mössbauer spectroscopy (CEMS)
    nuclear reaction analysis (NRA)
    nuclear techniques
    surface characterization
    surface modification
    Opis:
    Different methods and techniques for material characterization are often used as a standard procedure for the determination of material properties. Nuclear techniques provide new and more detailed information about the investigated materials. The main goal of the carried out experiments was to improve surface properties including wear, corrosion and high temperature oxidation resistance. Modification processes were carried out using high intensity pulsed plasma beams - HIPPB (106-108 W.cm-2) generated in a rod plasma injector (RPI). In most solid materials such treatment leads to a fast transient melting of the surface layer of the substrate followed by rapid crystallization. Heating and cooling processes are of non-equilibrium type. Initial and modified materials were characterized using different investigation methods including nuclear techniques. Results of the used nuclear techniques such as nuclear reaction analysis (NRA), Rutherford backscattered spectroscopy (RBS) and conversion electron Mössbauer spectroscopy (CEMS) are presented in the paper.
    Źródło:
    Nukleonika; 2012, 57, 4; 521-528
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High - temperature oxidation resistance in yttrium implanted stainless steel
    Autorzy:
    Barlak, M.
    Piekoszewski, J.
    Werner, Z.
    Sartowska, B.
    Waliś, L.
    Starosta, W.
    Kierzek, J.
    Kowalska, E.
    Wilhelm, R. A.
    Pochrybniak, C.
    Woźnica, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/146785.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    high-temperature oxidation resistance
    ion implantation
    yttrium
    Opis:
    Austenitic AISI 304, 316L and ferritic 430 stainless steels were implanted with yttrium to fluences ranging between 1 x 1015 and 5 x 1017 ions/cm2. The samples were subjected to oxidation in air at a temperature of 1000 centigrade for a period of 100 h and next examined by stereoscopic optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX) and Rutherford back scattering spectrometry (RBS). The results obtained with the use of ion implantation are discussed.
    Źródło:
    Nukleonika; 2012, 57, 4; 473-476
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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