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    Wyświetlanie 1-11 z 11
    Tytuł:
    The Development of Rapidly Solidified Magnesium – Copper Ribbons
    Autorzy:
    Pastuszak, M.
    Cieślak, G.
    Dobkowska, A.
    Mizera, J.
    Kurzydłowski, K. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/958209.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    magnesium-based alloys
    rapid solidification
    microstructure
    mechanical properties
    corrosion properties
    Opis:
    The aim of the present work was to plan and carry out an experiment consisting of amorphization of industrial magnesium alloy WE 43 (Mg - 4 Y - 3 RE - 0.5 Zr) modified by the copper addition. Investigated alloy modified with 20% of copper was rapidly quenched with the use of melt spinning technique. The effects of cooling rate on the structure and properties of the obtained material were extensively analyzed. The structure and phase analysis of samples were examined using X-ray diffraction method (XRD) while the thermal stability of the samples was determined by differential scanning calorimetry (DSC). Microstructure observations were also conducted. The microhardness tests (HV0.02) and corrosion resistance tests were carried out to investigate the properties of the material. Corrosion resistance measurements were held using a typical three-electrode system. As the result of the research, the effect of cooling rate on microstructure and properties of investigated alloy was determined.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2B; 1083-1088
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Tin Addition on the Degradability and Corrosion Properties of a New Zn-1.0 wt.% Mg Alloy
    Autorzy:
    Long, Zhouling
    Lang, Haiyang
    Ou, Jun
    Powiązania:
    https://bibliotekanauki.pl/articles/2174586.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Zn-1Mg alloy
    mechanical properties
    corrosion properties
    degradability
    hemolysis rate
    Opis:
    In this study, to investigate effects of tin addition on the microstructures and corrosion properties, Zn-1Mg-xSn (x = 1.0, 2.0 and 5.0 wt.%) ternary zinc alloys were prepared. The experimental results indicated that the Zn-1Mg-2.0 wt.% Sn alloy has the better mechanical properties compared with pure zinc and Zn-1Mg alloy. The tensile strength of the alloy material is 173.2±3.7 MPa, the yield strength is 120.7±2.4 MPa, the elongation is 5.64±0.08% and the hardness is 76.9±0.8 HV. The average degradation rate of the alloys immersion in SBF solution for 60 days is 0.16±0.03 mm/year, and the Zn-1Mg-2.0 wt.% Sn alloy hemolysis rate is only 0.81±0.02%. It is confirmed that the addition of tin is effective to improve the mechanical properties and degradation of Zn-1Mg alloy. It may be a candidate of the clinical application requirements of the degradable implant materials in orthopedics.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1209--1216
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Mechanical and Corrosion Properties of Al 7075/Garnet Metal Matrix Composites by Two-stage Stir Casting Process
    Autorzy:
    Sambathkumar, Mani
    Navaneethakrishnan, P.
    Sasikumar, K. S. K.
    Gukendran, Rangasamy
    Ponappa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049140.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al 7075
    Garnet
    two-stage stir casting
    mechanical properties
    corrosion properties
    Opis:
    The impact of Garnet addition into the AL7075 aluminium matrix on the physical, mechanical and corrosion properties are studied in this research paper. Al 7075/garnet composites are fabricated by using two-stage stir casting method in different (0, 5, 10, 15) volume percentages. Photomicrograph of prepared samples revealed the uniform distribution of garnet reinforcement into the base matrix. The corrosion rate is calculated by potentiodynamic polarization method. The actual density is increased by around 1.2% for al 7075 / garnet (15%) composite as compared to base alloy. Micro hardness of al 7075 / garnet (15%) composite is raised by around 47 (34%) compare to as cast base matrix. Al 7075 / garnet (15%) composite tensile strength stood at 252 Mpa, which is 40% greater than the base alloy. Al 7075 / 15% garnet composites reduce around 97% of corrosion rate than the base matrix. Alloy elements influenced the corrosion than Garnet reinforcement.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 4; 1123-1129
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Corrosion Behaviour Correlation of the Secondary Aluminium Casts in Natural Atmosphere and Laboratory Conditions
    Autorzy:
    Kuchariková, L.
    Liptáková, T.
    Tillová, E.
    Bonek, M.
    Medvecká, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/352248.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    secondary aluminium alloys
    high Fe content
    corrosion properties
    natural atmosphere
    Opis:
    The secondary aluminium alloys are very important material in actual industry from economic and ecological point of view. The secondary aluminium used for production of casts, however, contains some elements, i.e. iron, – affecting physical, chemical and mechanical behaviour. The subject of our investigation has been corrosion behaviour in natural atmosphere of the hypoeutectic AlSi7Mg0.3 cast alloys with various content of iron, because the Fe content affects not only mechanical properties but corrosion resistance, as well. Three types of the AlSi7Mg0.3 cast alloys were exposed for 9 months in natural atmosphere and the measure of their degradation by corrosion was found by determination of the weight loss and the light microscopy. In addition, a scanning electron microscopy (SEM) analyses and evaluation of surface changes were used. The corrosion behaviour in natural atmosphere was compared to results of the carried out electrochemical and exposure laboratory experiments in chloride solutions.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 4; 1455-1462
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Corrosion of Biocompatible Mg66+xZn30-xCa4 (x=0.2) Bulk Metallic Glasses
    Autorzy:
    Nowosielski, R.
    Cesarz-Andraczke, K.
    Sakiewicz, P.
    Maciej, A.
    Jakóbik-Kolon, A.
    Babilas, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/356929.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Mg-based alloys
    bulk metallic glasses
    amorphous structure
    corrosion properties
    biodegradable metallic alloys
    corrosion products
    Opis:
    The aim of this paper was to investigate the corrosion resistance of Mg66Zn30Ca4 and Mg68Zn28Ca4 metallic glasses and evaluate the ability of this amorphous alloy use for medical applications as biodegradable medical implants. Taking into account the amount of Mg, Zn, Ca elements dissolved in multielectrolyte physiological fluid (MPF) from Mg66+xZn30-xCa4 (x=0.2) alloys the daily dose of evolved ions from alloys components was determined. Additional goal of the paper was determination of corrosion rate (Vcorr) and amount of hydrogen evolved from amorphous magnesium alloys in simulated environment of human body fluids during 24h immersion and during electrochemical tests. Corrosion studies were done in the multielectrolyte physiological fluid (MPF) at 37°C. The amount of hydrogen evolved [ml/cm2] and corrosion rate Vcorr [mm/year] of amorphous Mg66Zn30Ca4 and Mg68Zn28Ca4 alloys were compared. The work also presents characterization of Mg-based bulk metallic glasses structure in the form of 2 mm thickness plates. Samples structure was analyzed by means of X-ray diffraction. Fracture and surface morphology of magnesium alloy samples were identified using scanning electron microscopy.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2A; 807-810
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Microstructure, Mechanical and Corrosion Properties of Biodegradable Mg-Ag Alloys
    Autorzy:
    Elen, Levent
    Turen, Yunus
    Ahlatci, Hayrettin
    Sun, Yavuz
    Unal, Mehmet
    Powiązania:
    https://bibliotekanauki.pl/articles/2125533.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Mg-Ag alloys
    biodegradable
    mechanical properties
    microstructure properties
    corrosion
    Opis:
    In this study, microstructure, mechanical, corrosion and corrosive wear properties of Mg-xAg the as-cast and extruded alloys (x: 1, 3 and 5 wt.%Ag) were investigated. According to the experimental results, as the amount of Ag added in the casting alloys increases, the secondary phases (Mg4Ag, Mg54Ag17) emerging in the structure have become more clarified. Furthermore, it was observed that as the amount of Ag increased, the grain size decreased and thus the mechanical properties of the alloys increased. Similarly, the extrusion process enabled the grains to be refined and the mechanical properties to be increased. As a result of the in vitro tests performed, the Mg-1Ag exhibited very bad corrosion properties compared to other alloys. On the other hand, according to corrosive wear tests results, a high wear rate and friction coefficient were found for Mg-5Ag alloys.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 3; 889-900
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and properties of tin bronzes produced by the SPD method
    Autorzy:
    Sobota, J.
    Rodak, K.
    Nowak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/355126.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    tin bronzes
    KOBO
    microstructure
    mechanical properties
    corrosion
    Opis:
    In this article the structural and mechanical properties of grain refinement of Cu-Sn alloys with tin content of 10%, 15% and 20% using the KOBO method have been presented. The direct extrusion by KOBO (name from the combination of the first two letters of the names of its inventors – A. Korbel and W. Bochniak) method employs, during the course of the whole process, a phenomenon of permanent change of strain travel, realized by a periodical, two-sided, plastic metal torsion. Moreover the aim of this work was to study corrosion resistance. The microstructure investigations were performed using an optical microscope Olimpus GX71, a scanning electron microscope (SEM) and a scanning transmission electron microscope (STEM). The mechanical properties were determined with INSTRON 4505/5500 machine. Corrosion tests were performed using «Autolab» set – potentiostat/galvanostat from EcoChemie B.V. with GPES software ver. 4.9. The obtained results showed possibility of KOBO deformation of Cu-Sn casting alloys. KOBO processing contributed to the refinement of grains and improved mechanical properties of the alloys. The addition of tin significantly improved the hardness. Meanwhile, with the increase of tin content the tensile strength and yield strength of alloys decrease gradually. Ductility is controlled by eutectoid composition and especially δ phase, because they initiate nucleation of void at the particle/matrix interface. No significant differences in the corrosion resistance between cast and KOBO processed materials were found.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 95-102
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Al2O3 Ceramic Particles on Corrosion Behaviour and Tribological Properties of Nickel Composite Coatings
    Autorzy:
    Nowak, M.
    Najder, A.
    Opyrchał, M.
    Boczkal, S.
    Żelechowski, J.
    Bigaj, M.
    Gawlik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/354798.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite coating
    Al2O3
    corrosion resistance
    tribological properties
    Opis:
    The paper presents a study on corrosion behaviour and tribological properties of nickel composite coatings deposited by electrochemical method on aluminium alloy from 2xxx series (AlCu4MgSi). The nickel composite coatings were produced in a Watts bath of the following chemical composition: NiSO4·7H2O 150 g/l, NiCl2·6H2O 30 g/l, H3BO3 30 g/l with the addition of saccharin in an amount of 2 g/l. As hard ceramic dispersed particles embedded in the coating, alumina (Al2O3) was used in an amount of 12,5; 25; 50 and 75 g/l. Coatings were produced using cathodic current density of 6 A/dm2, bath temperature of 60°C, pH 4, and the time 60 minutes. The electroplating bath was stirred with a mechanical stirrer (350 rpm). The results obtained were compared with a nickel coating deposited without the ceramic particles. It was found that the presence of Al2O3 increases the wear resistance of composite coatings, but does not significantly improve the corrosion properties.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 1; 195-198
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure, Mechanical Properties and Corrosion Behavior of Zr-Containing AlSi5Cu2Mg Alloy
    Autorzy:
    Bolibruchová, Dana
    Širanec, Lukáš
    Kajánek, Daniel
    Chalupová, Mária
    Powiązania:
    https://bibliotekanauki.pl/articles/28099514.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    mechanical properties
    zirconium
    microstructure
    corrosion
    AlSi5Cu2Mg
    Opis:
    The aim of this paper was to analyze the impact of varying zirconium addition on selected properties of AlSi5Cu2Mg alloy. The results of this research showed that zirconium addition in the range of 0.05 to 0.20 wt. % caused a decrease in ultimate tensile strength and yield strength of the experimental alloys after T7 heat treatment, probably due to the formation of primary Al3Zr intermetallic phases. These phases were observed as an individual plates or as a formation of two crossed plate-like phases. Potentiodynamic polarization tests in 3.5% NaCl solution revealed that addition of Zr had a positive effect on thermodynamic corrosion stability of the AlSi5Cu2Mg alloy due to shift of the corrosion potential to a more positive values for all as-cast samples. Addition of Zr in the as-cast alloys improved corrosion kinetics by lowering of corrosion current density.
    Źródło:
    Archives of Metallurgy and Materials; 2023, 68, 2; 749--756
    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:
    Usable Properties of Magnesium Alloy ZK60A by Plastic Deformation
    Właściwości użytkowe przerabianego plastycznie stopu magnezu ZK60A
    Autorzy:
    Płonka, B.
    Remsak, K.
    Nowak, M.
    Lech-Grega, M.
    Korczak, P.
    Najder, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/353160.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    magnesium alloys
    extrusion
    mechanical properties
    structure
    corrosion
    stopy magnezu
    wytłaczanie
    właściwości mechaniczne
    struktura
    korozja
    Opis:
    The object of this study was to develop parameters of plastic deformation process of magnesium alloy - ZK60A. The tests have showed that for this alloy it is possible to use the temperature of the plastic deformation process ranging from 350°C to 450°C. Samples were characterized by mechanical properties and structure in different heat treatment tempers. This magnesium alloy obtained in the T5 temper higher mechanical properties then T6 temper. The paper also presents research results of investigation of conversion coating on ZK60A magnesium alloy by anodic oxidation method in non-chromium solutions. It was found that the coating produced in non-chromium solutions show considerable increase of corrosion resistance of tested alloy.
    Przedmiotem prezentowanej pracy było określenie możliwości kształtowania plastycznego na gorąco półwyrobów ze stopu magnezu ZK60A. Z przeprowadzonych prób wynika, iż dla tego stopu można stosować temperaturę przeróbki plastycznej materiału z zakresu 350°C÷50°C. Otrzymane półwyroby scharakteryzowano pod kątem właściwości mechaniczne i struktury w różnych stanach umocnienia wydzieleniowego. Stop ten uzyskuje wyższe właściwości mechaniczne w stanie T5 niż dla stanu T6. W pracy przedstawiono wyniki badań dotyczące wytwarzania powłok konwersyjnych na stopie magnezu ZK60A metodą utleniania anodowego w roztworach bezchromianowych. Stwierdzono, że wytworzone powłoki w roztworach bezchromianowych powodują wrzrost odporności na korozję badanego stopu.
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 1; 377-383
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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