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    Wyświetlanie 1-9 z 9
    Tytuł:
    Properties of Tool Steel with Cr/CrN Type Hybrid Coatings, Obtained by PVD Method
    Autorzy:
    Kasprzycka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/356736.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid coating
    PVD treatment
    wear
    corrosion
    Opis:
    The paper discusses the results of investigations of material, tribological and anti-corrosion properties of hybrid coatings of the Cr/CrN type, consisting of chromium and chromium nitride, formed on the surface of alloy tool steel by the Arc-PVD method. Investigations of the morphology and microstructure of hybrid coatings, as well as of their phase composition were carried out. The studies on mechanical properties included tests on hardness and Young’s modulus using the nanoindentation method. Tests on adhesion were conducted using the scratch-test method. Tribological properties of the obtained coatings were evaluated by the pin-on-disc method. Resistance to corrosion was determined by electrochemical methods. It was shown that hybrid coatings of the Cr/CrN type are characterized by good adhesion to the substrate and very good tribological properties, as well as by very good resistance to corrosion in a solution containing chlorine ions.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 293-301
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface modification ofaisi440b stainless steel and its influence on surgical drill bits performance
    Autorzy:
    Łępicka, M.
    Grądzka-Dahlke, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/350989.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surgical drill bits
    corrosion
    wear
    DLC
    TiN
    Opis:
    The development of modern invasive surgery is highly dependent on the performance of surgical instruments, understood as long-term efficiency arising from high resistance to wear and corrosion. In order to maintain sufficient reliability, surgical cutting instruments are often made of martensitic stainless steels. Nevertheless, the use of ferrous alloys in medical applications is still a concern due to their questionable corrosion and wear resistance. To extend their bioconipatibility, improve stability in variable environmental conditions, improve ease of handling, and maximize their performance, diffusion layers and coatings are applied to the surface. The aim of this work was to evaluate the effect of TiN and diamond-like carbon (DLC) surface modification on the performance of surgical drill bits, that is. wear and corrosion resistance, measured in model and field tests. Based on the findings presented, DLC layers can be recommended as anti-wear and anti-corrosion coatings for surgical drill bits.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 3; 1417-1424
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructural, Corrosion and Abrasive Characteristics of Titanium Matrix Composites
    Autorzy:
    Figiel, P.
    Garbiec, D.
    Biedunkiewicz, A.
    Biedunkiewicz, W.
    Kochmański, P.
    Wróbel, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/354537.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    titanium matrix composite
    SPS
    corrosion resistance
    sliding wear
    Opis:
    Commercially pure titanium is less expensive, generally more corrosion resistant and lower in strength than its alloys, and is not heat-treatable. The use of Ti and its alloys as construction materials under severe friction and wear conditions is limited due to their poor tribological properties. Nevertheless, proper addition of hard ceramic particles into Ti and its alloys has proved to be an efficient way to enhance their mechanical and wear properties. Our purpose in this work was to analyze the corrosion, tribocorrosion, mechanical and morphological effects of combining titanium carbide with titanium metal, to create a unique composite via spark plasma sintering technique (SPS). Composites with different mass percentage (1, 5, 10, 15 and 20 wt %) of ceramic phase were produced. The samples of pure Ti and Ti-6Al-4V alloy were also tested, as a reference. These composites were examined for mechanical properties and corrosion resistance in an environment similar to the human body (Ringer’s solution). Open circuit potential (OPC) and anodic polarization measurements were performed. The properties of titanium composites reinforced with micro- and nanocrystalline TiC powders were compared. It was stated that wear properties were significantly improved with increasing amount of TiC in matrix, especially in the case of nanocrystalline reinforcement. In terms of corrosion resistance, the composites showed slightly worse properties compared to pure titanium and Ti-6Al-4V alloy.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 4; 2051-2059
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of nano TiO2/Micro (SiC/B4C) Reinforcement on the Mechanical, Wear and Corrosion Behaviour of A356 Metal Matrix Composite
    Autorzy:
    Paulraj, D.
    Jeyakumar, Palanisamy D.
    Rajamurugan, G.
    Krishnasamy, Prabu
    Powiązania:
    https://bibliotekanauki.pl/articles/2049401.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nano TiO2
    SiC
    B4C
    wear
    corrosion
    Opis:
    This work investigates the distribution and the effect of synthesized nano TiO2, micro SiC and B4C particle on the aluminium (A356) metal matrix composites (AMMC). The consequences of this reinforcement on the mechanical, tribology and corrosion behaviour of the AMMC matrix are analyzed. The nano TiO2 is synthesized by wet chemistry sol-gel process, and the reinforcements are added with A-356 by stir casting method. The ASTM standard test specimens are characterized through mechanical, tribology, and corrosion tests for identifying their properties. The metallurgical characterization has been deliberated through XRD and SEM with EDS. in the tensile test results, the percentage of elongation is dropped drastically by 73% due to the enhanced volume % of nano TiO2, micro SiC, and B4C particles. The particle addition of the wear rate and weight loss are reduced at different volume percentages of the A356 matrix. The time plays a significant role in the corrosion rate. The test results also confirm that the corrosion rate is comparatively minimum in 24 hrs (592.35 mm/yr) duration than the 48 hrs (646.368 mm/yr) in both the solutions.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 3; 871-880
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid nanocomposite layers Ni/Al2O3/C graphite produced by electrocrystallization method
    Autorzy:
    Bartoszek, W.
    Trzaska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/354819.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid composite layers
    electrocrystallization
    nickel layers
    wear resistance
    corrosion resistance
    Opis:
    The paper presents the results of studies of hybrid composite layers Ni/Al2O3/Cgraphite produced by the electrodeposition method. Three variants of hybrid composite layers were prepared in electrolyte solutions with the same amounts of each dispersion phases which were equal to 0.25; 0.50 and 0.75 g/dm3. The structure of Ni/Al2O3/Cgraphite layers as well as the Al2O3 and graphite powders, which were used as dispersion phases was investigated. The results of morphology and surface topography of produced layers are presented. The modulus of elasticity and microhardness of the material of produced layers were determined by DSI method. Tribological and corrosion resistance tests of produced layers were carried out. Realized studies have shown that the material of the produced layers is characterized by a nanocrystalline structure. Incorporation of dispersion phases into the nickiel matrix increases the degree of surface development of layers. Ni/Al2O3/Cgraphite layers are characterized by high hardness and abrasion resistance by friction, furthermore, they provide good corrosion protection for the substrate material.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 167-173
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sliding Wear Behaviour and Corosion Resistance to Ringer’s Solution of Uncoated and DLC Coated X46Cr13 Steel
    Autorzy:
    Scendo, M.
    Radek, N.
    Konstanty, J.
    Staszewska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/355518.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diamond-like carbon
    sliding wear properties
    corrosion in Ringer’s solution
    Opis:
    Sliding wear properties and corrosion resistance in Ringer’s solution of uncoated and diamond-like carbon (DLC) coated X46Cr13 steel was tested. The Raman spectra showed that the DLC film was successfully coated by plasma assisted CVD method onto the steel surface. The wear test, carried out using a ball-on disk tribometer, revealed that the DLC coating show better resistance to sliding wear and lower friction coefficient against a 100Cr6 steel ball than five times softer X46Cr13 steel. The oxidation kinetic parameters were determined by means of both the gravimetric and electrochemical method. It was found that the DLC coating markedly decreased the rate of corrosion of the X46Cr13 steel, irrespective of the corrosion mechanism involved.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 1895-1900
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of BN or SiC Addition on PEO Properties of Coatings Formed on AZ91 Magnesium Alloy
    Autorzy:
    Pelczar, D.
    Długosz, Piotr
    Darłak, P.
    Szewczyk-Nykiel, Aneta
    Nykiel, Marek
    Hebda, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2048800.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite oxide film
    abrasive wear resistance
    corrosion behavior
    scratch resistance
    protective coatings
    Opis:
    Currently, due to the economic and ecological aspects, light alloys are increasingly important construction material, in particular in the transport industry. One of the popular foundry magnesium alloys is the alloy AZ91, which among others due to mechanical properties and technological features, is used, for example, for light structural parts. The paper presents the results of research on modification of the AZ91 alloy surface layer in the plasma electrolytic oxidation process. The change of usable properties of the produced coatings was obtained by introducing additions of silicon carbide or boron nitride. The thickness and hardness of the protective layers produced, resistance to scratches and corrosion resistance were determined. Moreover, the friction coefficient of the coating-steel pair was investigated. The quality of the connections made between the coating and the substrate, i.e. the magnesium alloy, was also evaluated. The results obtained for coatings with silicon carbide or boron nitride additives were always compared to the results obtained for unmodified samples. On the basis of the obtained results, it was shown that the introduction of boron nitride additive to the AZ91 alloy coating produced in the plasma electrolytic oxidation process significantly improves the resistance to: (i) corrosion and (ii) abrasive wear of the coating.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 1; 147-154
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface Modification Of Implants For Bone Surgery
    Modyfikacja powierzchni implantów ortopedycznych
    Autorzy:
    Marciniak, J.
    Szewczenko, J.
    Kajzer, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/355874.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    AISI 316L stainless steel
    Titanium alloy Ti6Al4V
    surface layer
    corrosion and wear resistance
    biocompatibility
    stal nierdzewna AISI 316L
    stop tytanu Ti-6Al-4V
    warstwa powierzchniowa
    korozja i odporność na ścieranie
    biokompatybilność
    Opis:
    The study discusses the methods of surface modification methods for AISAI 316 L steel and Ti6Al4V ELI titanium alloy, dedicated to complex design implants used in bone surgery. Results of structural tests have been presented along with those evaluating the physicochemical properties of the formed surface layers. Clinical feasibility of the surface layers has also been evaluated. The developed surface modification methods improved the resistance to pitting, crevice and stress corrosion and ensured better biocompatibility. Moreover, the layers formed are marked by plasticity. Results of the tests performed show applicability of the evaluated methods of surface modification in complex shape implants for the clinical use.
    W pracy omówiono metody modyfikacji powierzchni stali AISAI 316 L oraz stopu tytanu Ti6Al4V ELI przeznaczonych na implanty o złożonej konstrukcji stosowanych w chirurgii kostnej. Przedstawiono wyniki badań struktury oraz własności fizykochemicznych wytworzonych warstw wierzchnich. Określono również przydatność wytworzonych warstw do zastosowań klinicznych. Opracowane metody modyfikacji powierzchni zwiększyły odporność na korozję wżerową, szczelinową i naprężeniową oraz poprawiły biokompatybilności. Ponadto wytworzone warstwy cechują się podatnością do odkształceń. Wyniki badań wykazały przydatność zastosowanych metod modyfikowania powierzchni implantów o złożonych kształtach do zastosowań klinicznych.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 3; 2123-2129
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tribological and corrosive properties of the parts of machines with surface alloy layer
    Własności trybologiczne i korozyjne części maszyn z powierzchniową warstwą stopową
    Autorzy:
    Szajnar, J.
    Walasek, A.
    Baron, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/351546.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite layer
    ferrochromium
    cast
    abrasion wear resistance
    corrosion resistance
    warstwa stopowa
    żelazochrom
    odlew
    odporność na ścieranie
    odporność na korozję
    Opis:
    There are presented the results of researches conducted on the steel cast with surface alloy layer in this work. The measurement of the thickness, hardness and abrasion wear resistance was conducted in accordance with norm ASTM G 65-00. The measurement of the corrosion resistance was conducted in accordance with the potentio - dynamical method. It is shown that it is possible to obtain the alloy surface layer of different thickness by control of some factors: pouring temperature Tzal , diameter of grain of FeCrC alloy Zw and the thickness of the cast wall gśo. It is proved that the smaller diameter of ferrochromium grain, the thicker surface alloy layer. It is also said that the higher pouring temperature and thicker the cast wall, the thicker surface alloy layer. What is more - the smaller thickness of the cast wall, the bigger hardness and abrasion wear resistance.
    W artykule przedstawiono wyniki badań odlewu staliwnego z powierzchniową warstwą stopową. Badania obejmowały pomiar grubości, twardości, odporności na zużycie ścierne wykonane zgodnie z normą ASTM G 65-00 oraz odporności na korozję metodą potencjo-dynamiczną. W wyniku przeprowadzonych badań stwierdzono, że sterując w zadanym zakresie zmiennymi czynnikami procesu takimi jak temperatura zalewania staliwa Tzal, średnica Zw ziarna stopu Fe-Cr-C i grubość ścianki odlewu gśo. można uzyskać powierzchniową warstwę stopową o różnej grubości. Wyniki badań dowiodły również, że stosowanie na wkładkę stopową żelazochromu o mniejszej średnicy ziarna powoduje powstanie powierzchniowej warstwy stopowej o większej grubości, podobnie jak przy wzroście temperatury zalewania i grubości ścianki odlewu. Ponadto stwierdzono, że im mniejsza grubość ścianki odlewu tym uzyskuje się większą twardość warstwy i odporność na zużycie ścierne.
    Źródło:
    Archives of Metallurgy and Materials; 2013, 58, 3; 931-936
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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