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Wyświetlanie 1-15 z 17
Tytuł:
The Recycling of Materials Containing Iron and Zinc in the OxyCup Process
Autorzy:
Holtzer, M.
Kmita, A.
Roczniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/382832.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
recycling
iron
zinc
modern technologies
wastes
recykling
żelazo
cynk
nowoczesna technologia
odpady
Opis:
Environmentally friendly and economically profitable technologies, enabling utilisation of wastes from metallurgical processes and regeneration of Fe and Zn contained in them, are looked for. This allows also saving of natural resources such as ores. Several techniques have been developed and introduced for recycling sludge and dust that contain iron and zinc. Currently, there are three major ways to treat zinc -bearing dust: rotary hearth furnaces method (the FASTMET process), rotary kiln method (the Waelza process), shaft furnace method (the OXYCUP method). This technology can be used to fully recycle metallurgical wastes such as slag crusts or metal-bearing fractions of desulfurization slags without the need for additional preparation of these materials, dust, sludge and scale generated in different stages of iron and steelmaking. The OXYCUP process described in paper combines the function of melting in traditional cupola furnaces (CF) with function of reduction in blast furnaces (BF).
Źródło:
Archives of Foundry Engineering; 2015, 15, 1 spec.; 126-130
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mössbauer Spectroscopy in the Studies of Iron Phases From the Slags After Zinc and Lead Production
Autorzy:
Jonczy, I.
Fornal, P.
Stanek, J.
Powiązania:
https://bibliotekanauki.pl/articles/380117.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Mössbauer spectroscopy
phase composition
slag after zinc
lead production
spektroskopia Mössbauera
skład fazowy
produkcja ołowiu
Opis:
Upper Silesia District is one of the most polluted areas in the country. Rich deposits of metal ores and hard coal have contributed to the extensive development of metallurgy and mine industry which started as early as in the Middle Ages. The ecological hazard can be illustrated by an over 100-year-old waste dump of Zn-Pb ores in one of the Silesian cities – in Ruda Śląska. Despite the long storage period, the wastes, represented mainly by weathered slags as also vitrified waste material, contain of lot of heavy metals in varied their chemical forms. The following metals have been found in wastes: Cd, Pb, Zn, As, Cu, Ti and other, and also a lot of amounts of iron. In the article the results Mössbauer spectroscopy are presented, as a preliminary stage of mineralogical studies of Zn-Pb wastes. Depending on the type of tested waste material different iron phases have been shown: in the weathered slag four different products of the iron oxidation were detected: divalent Fe(OH)2, mixed valence magnetite, Fe3O4 and three valence Fe(OH)3, α Fe2O3 and γ-Fe2O3 compounds, in the vitrified material metallic forms of iron are dominated.
Źródło:
Archives of Foundry Engineering; 2015, 15, 3 spec.; 21-24
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of the Number of Eutectic Grains on Coating Growth During Hot Dip Galvanising of Ductile Iron Castings
Autorzy:
Kopyciński, D.
Guzik, E.
Szczęsny, A.
Powiązania:
https://bibliotekanauki.pl/articles/382107.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
casting quality management
zinc coating
ductile iron
eutectic grains
zarządzanie jakością odlewów
powłoka cynkowa
żeliwo sferoidalne
Opis:
Studies were conducted on a zinc coating produced on the surface of ductile iron grade EN-GJS-500-7 to determine the eutectic grain effect. For this purpose, castings with a wall thickness of 5 to 30 mm were made and the resulting structure was examined. To obtain a homogeneous metal matrix, samples were subjected to a ferritising annealing treatment. To enlarge the reaction surface, the top layer was removed from casting by machining. Then hot dip galvanising treatment was performed at 450°C to capture the kinetics of growth of the zinc coating (in the period from 60 to 600 seconds). Analysing the test results it was found that within the same time of hot dip galvanising, the differences in the resulting zinc coating thickness on samples taken from castings with different wall cross-sections were small but could, particularly for shorter times of treatment, reduce the continuity of the alloyed layer of the zinc coating.
Źródło:
Archives of Foundry Engineering; 2014, 14, 1; 67-70
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Destruction Mechanism of Z10400 Zn-based Alloy Subjected to Cavitational Erosion
Autorzy:
Jasionowski, R.
Zasada, D.
Polkowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/380734.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
zinc alloy
cavitation wear
Electron Backscattered Diffraction (EBSD)
stop cynku
zużycie kawitacyjne
dyfrakcja elektronów wstecznie rozproszonych
Opis:
Z10400 zinc-based alloy has a very good casting properties and high resistance to corrosion. These two advantages make that Z10400 zinc-based alloy is commonly used for cathodic protection of hulls of ships. Cathodic anodes made of Z10400 zinc-based alloy in the propeller and flap rudder areas are also additionally exposed to the cavitation erosion. The aim of this work was to determine the cavitation erosion resistance of Z10400 zinc-based alloy, which is applied as protectors in cathodic protection of hulls of ships. The examination of cavitational erosion was carried out on a jet-impact measuring device. Study of the mechanism of the destruction of Z10400 alloy based on analysis was performed with scanning electron microscope Quanta 3d FEG and electron back scattered diffraction (EBSD) method.
Źródło:
Archives of Foundry Engineering; 2013, 13, 2 spec.; 48-52
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Grain-refinement on Zn-10Al Alloy Damping Properties
Autorzy:
Piwowarski, G.
Krajewski, P. K.
Buraś, J.
Krajewski, W. K.
Powiązania:
https://bibliotekanauki.pl/articles/381530.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
zinc-aluminium cast alloys
inoculation
grain refinement
damping
attenuation coefficient
stopy cynk-aluminium
uszlachetnianie stopów
współczynnik tłumienia
Opis:
The paper is devoted to grain-refinement of the medium-aluminium zinc based alloys (MAl-Zn). The system examined was sand cast Zn-10 wt. %. Al binary alloy (Zn-10Al) doped with commercial Al-3 wt. % Ti – 0.15 wt. % C grain refiner (Al-3Ti-0.15C GR). Basing on the measured attenuation coefficient of ultrasonic wave it was stated that together with significantly increased structure fineness damping decreases only by about 10 – 20%. The following examinations should establish the influence of the mentioned grain-refinement on strength and ductility of MAl-Zn cast alloys.
Źródło:
Archives of Foundry Engineering; 2014, 14, 4; 91-94
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural stability of the high-aluminium zinc alloys modified with Ti addition
Autorzy:
Krajewski, W. K.
Zak, P. L.
Orava, J.
Greer, A. L.
Krajewski, P. K.
Powiązania:
https://bibliotekanauki.pl/articles/382429.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wysokoaluminiowy stop cynku
dodatek Ti
stabilność strukturalna
high-aluminium zinc alloys
Ti addition
structural stability
XRD examinations
Opis:
The subject of the paper is structural stability of the Zn-26 wt.% Al binary alloys doped with 2.2 wt.% Cu or 1.6 wt.% Ti addition. The structural stability of Zn-Al alloys with increased Al content is connected with stability of solid solution of zinc in aluminium [...] , which is the main component of these alloys microstructure. Such a solution undergoes phase transformations which are accompanied, among others, by changes in dimensions and strength properties. The structural stability of the ZnAL26Cu2.2 and ZnAl26Ti1.6 alloys was investigated using XRD examinations during long term natural ageing after casting, as well as during long term natural ageing after super-saturation and quenching. On the basis of the performed examinations it was stated that small Ti addition to the binary ZnAl25 alloy, apart from structure refinement, accelerates decomposition of the primary [...] phase giving stable structure in a shorter period of time in comparison with the alloy without Ti addition. Addition of Ti in amount of 1.6 wt.%, totally replacing Cu, allows obtaining stable structure and dimensions and allows avoiding structural instability caused by the metastable [...] CuZn4 phase present in the ZnAl26Cu2.2 alloy.
Źródło:
Archives of Foundry Engineering; 2012, 12, 1; 61-66
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Grain Refinement and Feeding Quality on Damping Properties of the Al-20Zn Cast Alloy
Autorzy:
Krajewski, W. K.
Faerber, K.
Krajewski, P. K.
Powiązania:
https://bibliotekanauki.pl/articles/380999.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
high-zinc aluminium alloy
grain refinement
feeding quality
damping properties
wysokocynkowy stop aluminium
rozdrobnienie ziarna
właściwości tłumiące
Opis:
The paper presents relationships between the degree of structure fineness and feeding quality of the Al – 20 wt.% Zn (Al-20 Zn) alloy cast into a mould made from sand containing silica quartz as a matrix and bentonite as a binder, and its damping coefficient of the ultrasound wave at frequency of 1 MHz. The structure of the examined alloy was grain refined by the addition of the refining Al-3 wt.% Ti – 0.15 wt.%C (TiCAl) master alloy. The macrostructure analysis of the initial alloy without the addition of Ti and the alloy doped with 50-100 ppm Ti as well as results of damping experiments showed that the structure of the modified alloy is significantly refined. At the same time, its damping coefficient decreases by about 20-25%; however, it still belongs to the so called high-damping alloys. Additionally, it was found that despite of using high purity metals Al and Zn (minimum 99,99% purity), differences in the damping coefficient for samples cut from upper and bottom parts of the vertically cast rolls were observed. These differences are connected with the insufficient feeding process leading to shrinkage porosity as well as gases present in metal charges which are responsible for bubbles of gas-porosity.
Źródło:
Archives of Foundry Engineering; 2018, 18, 2; 209-214
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elimination of Zinc from Aluminum During Remelting in an Vacuum Induction Furnace
Autorzy:
Smalcerz, Albert
Blacha, Leszek
Węcki, Bartosz
Desisa, D. G.
Łabaj, Jerzy
Jodkowski, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/2174631.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mass transfer coefficient
zinc evaporation
vacuum induction furnace
meniscus
współczynnik przenikania masy
odparowanie cynku
piec indukcyjny próżniowy
menisk
Opis:
In this paper, the results of the study on aluminium evaporation from the Al-Zn alloys (4.2% weight) during remelting in a vacuum induction furnace (VIM) are presented. The evaporation of components of liquid metal alloys is complex due to its heterogeneous nature. Apart from chemical affinity, its speed is determined by the phenomena of mass transport, both in the liquid and gas phase. The experiments were performed at 10-1000 Pa for 953 K - 1103 K. A significant degree of zinc loss has been demonstrated during the analysed process. The relative values of zinc loss ranged from 4 to 92%. Lowering the pressure in the melting system from 1000 Pa to 10 Pa caused an increase in the value of density of the zinc evaporating stream from 3.8210-5 to 0.000564 gcm-2s-1 at 953 K and 3.3210-5 to 0.000421 gcm-2s-1 for 1103 K. Based on the results of the conducted experiments. it was found that evaporation of zinc was largely controlled by mass transfer in the gas phase and only for pressure 10 Pa this process was controlled by combination of both liquid and gas phase mass transfer.
Źródło:
Archives of Foundry Engineering; 2022, 22, 3; 11--18
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Damping properties vs. structure fineness of the high-zinc aluminum alloys
Autorzy:
Krajewski, W. K.
Haberl-Faerber, K.
Buras, J.
Krajewski, P. K.
Powiązania:
https://bibliotekanauki.pl/articles/380214.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wysokocynkowy stop aluminium
rozdrobnienie ziarna
właściwości tłumiące
współczynnik tłumienia
high zinc aluminum alloys
grain refinement
damping properties
damping coefficient
Opis:
The subject of this study is the presentation of relation between the degree of structure fineness and ultrasonic wave damping coefficient for the high-zinc aluminium alloys represented in this study by the sand mould cast alloy Al - 20 wt% Zn (AlZn20). The studied alloy was refined with a modifying (Al,Zn)-Ti3 ternary master alloy, introducing Ti in the amount of 400 pm into metal. Based on the analysis of the initial and modified alloy macrostructure images and ultrasonic testing, it was found that the addition of (Al,Zn)-Ti3 master alloy, along side a significant fragmentation of grains, does not reduce the coefficient of ultrasonic waves with a frequency of 1MHz.
Źródło:
Archives of Foundry Engineering; 2012, 12, 3; 63-66
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intergranular Corrosion of the as Cast Hypoeutectic Zinc-Aluminium Alloy
Autorzy:
Lachowicz, M. M.
Lachowicz, M. B.
Powiązania:
https://bibliotekanauki.pl/articles/382593.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metallography
corrosion resistance
intergranular corrosion
zinc alloy
alloy ZnAlCu
metalografia
odporność na korozję
korozja międzykrystaliczna
stop cynku
stop ZnAlCu
Opis:
The paper presents the research results of the solenoid housing made of the Zn4Al1Cu alloy that was destroyed as a result of corrosion. Surface of the tested part showed macroscopically the features typical for white corrosion, and the resulting corrosion changes led to a disturbance of the alloy cohesion. The research performed have shown that the tested solenoid valve has intergranular corrosion as a reaction of the environment containing road salt. The corrosion was initiated in the areas of the alfa phase existence appearing in the eutectic areas which propagated over dendritic areas of the alloy. Initiation of the corrosion followed as a result of the galvanic effect of the alfa phase reach in aluminium showing higher electrochemical potential, in contact with the eta phase reach in zinc. The impact of the phase reach in lead present in the microstructure on the corrosion processes run was not found.
Źródło:
Archives of Foundry Engineering; 2017, 17, 3; 79-84
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tribological Wear of as Cast Zn-4Al Alloy Cooled at Various Rates from the Eutectoid Transformation Temperature
Autorzy:
Lachowicz, M. M.
Leśniewski, T.
Lachowicz, M. B.
Jasionowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1837868.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metallography
microstructure
heat treatment
abrasive wear
Zinc alloys
Zn-4Al
metalografia
mikrostruktura
obróbka cieplna
zużycie ścierne
stopy cynku
Opis:
The paper presents the results from a study on the impact of the cooling rate in the eutectoid transition on the abrasive wear of the as cast Zn-4Al alloy. The microstructure of the researched material consists of dendrites of the η solid solution and an (α+η) eutectic structure. During the eutectoid transformation at 275oC the distribution in the eutectic structure was transformed and fined. Heat treatment was carried out for this alloy, during which three cooling mediums were used, i.e. water, air and an furnace. For the research material obtained in this way, metallographic examinations were performed using the methods of light and scanning electron microscopy, as well as hardness measurements. It was found that faster cooling rate promoted the fragmentation of structural components, which translates into higher hardness of the material. This also had effects in the tribological wear of the tested alloy. As part of the tests, an abrasive wear test was carried out on a standard T-07 tester.
Źródło:
Archives of Foundry Engineering; 2020, 20, 4; 108-114
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of ductile cast iron matrix on zinc coating during hot dip galvanising of castings
Autorzy:
Kopyciński, D.
Szczęsny, A.
Powiązania:
https://bibliotekanauki.pl/articles/380458.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cynkowanie ogniowe
żeliwo sferoidalne
kinetyka wzrostu
powłoka cynkowa
osnowa metaliczna
hot-dip galvanizing
ductile iron
growth kinetics
zinc coating
metallic matrix
Opis:
The growth kinetics of the zinc coating formed on the surface of casting made from ductile iron grade EN-GJS-500-3 was investigated. To produce homogenous metal matrix in test samples, the normalising and ferritising annealing was carried out. Studies showed a heterogeneous structure of cast iron with varying content of the phases formed. This was followed by hot dip galvanising treatment at 450 C to capture the growth kinetics of the zinc coating (the time of the treatment ranged from 60 to 600 seconds). Nonlinear estimation of the determined growth kinetics of the alloyed layer of a zinc coating was made and an equation of the zinc coating growth was derived. Based on the results of the investigations it was concluded that thickness of the zinc coating formed on the surface of casting with a 100% pearlitic matrix makes 55% of the thickness of coating formed on the surface in 100% ferritic.
Źródło:
Archives of Foundry Engineering; 2012, 12, 4; 101-104
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ zabiegu modyfikowania zaprawą ZnTi3,2 na mikrostrukturę stopu ZnAl10
Influence of the Modification by ZnTi3,2 Grain-Refiner on the ZnAl10 Alloy Microstructure
Autorzy:
Piwowarski, G.
Buraś, J.
Krajewski, W. K.
Powiązania:
https://bibliotekanauki.pl/articles/381412.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stop cynku
rozdrabnianie ziarna
modyfikacja stopu
analiza termiczna
mikrostruktura stopu
zinc alloy
grain refining
modification of alloy
thermal analysis
alloy microstructure
Opis:
Publikacja dotyczy zabiegu modyfikowania podwójnych stopów Zn o średniej zawartości aluminium dodatkiem zaprawy zawierającej tytan i obejmuje badania wpływu zabiegu modyfikowania na stopień rozdrobnienia mikrostruktury stopu Zn-10% mas. Al (ZnAl10) odlewanego do formy piaskowej. Badany stop został rozdrabniany zaprawą modyfikującą Zn – 3,2% mas. Ti, wprowadzającą do metalu Ti. Na podstawie dokonanej oceny obrazów mikrostruktury stopu wyjściowego niemodyfikowanego i zmodyfikowanego zmiennym dodatkiem Ti zawartego w zaprawie modyfikującej stwierdzono, że zastosowana zaprawa modyfikująca powoduje określone, w zależności od ilości wprowadzonego do stopu Ti, rozdrobnienie ziarna stopu w stosunku do stopu wyjściowego niemodyfikowanego. Z kolei wyniki uzyskane w przeprowadzonej analizie termicznej potwierdzają zarodkotwórcze działanie użytej do badań zaprawy.
The paper deals with grain-refinement of the sand-cast binary medium-aluminium Zn-10 mas. % alloy (ZnAl10) by using the Zn-3.2 mas. %Ti master alloy. Basing on the structure analysis it was stated that the master alloy causes significant grain-refinement in comparison with the initial, no modified alloy. Thermal analysis of the cooling curves stated that the modified alloys had increased nucleation temperatures and, at the same time, decreased recalescence – which proves nucleating action of the Zn-3.2 mas. %Ti master alloy in the examined alloy.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3 spec.; 129-132
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristic of Cast Zn-Al-Cu Alloy Microstructure after Modification
Autorzy:
Krupińska, B.
Krupiński, M.
Rdzawski, Z.
Labisz, K.
Król, M.
Powiązania:
https://bibliotekanauki.pl/articles/379655.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovative cast materials
innovative cast technologies
metallography
modification
cast zinc alloys
microstructure
nowoczesne materiały odlewnicze
innowacyjne technologie odlewnicze
metalografia
modyfikacja
mikrostruktura
stop cynku
Opis:
Cast zinc alloys have similar properties to aluminium alloys. The differences are due to the lower melting point and higher density. Zinc has a density of 7.14 g/cm3, a melting point of 419.5°C and the boiling temperature of 906º C. In the temperature range from 150 to 200°C, zinc has good susceptibility to plastic deformation. It is also resistant to atmospheric factor influence, but is not resistant to acids. The main use of zinc alloy, is the production of thin-walled casts that require high precision. Zinc alloys are also used for die casting moulds, housings and covers as well as a variety of devices that are used in the precision industry, electrical engineering, automotive and construction industry. Properly performed chemical modification leads to improve of properties of the produced castings. Therefore it is very important to know how the cast structure with the change of the chemical composition by adding metallic modifiers to the liquid metal. In this work there was studied the effect of chemical modification of cast zinc alloy on the properties and microstructure of the alloys before and after modification. Modified alloys were prepared by adding modifiers in the range of 0.1% to 1% in form of Ti- Sr and B as aluminium master alloy and then cast into the metal moulds. Next the thermo-derivative analysis was performed of the modified Zn-Al-Cu alloy, the microstructure investigation was carried out using light microscopy and scanning electron microscopy with EDS X-ray microanalysis usage as well as hardness was measured of the modified Zn-Al-C alloys.
Źródło:
Archives of Foundry Engineering; 2014, 14, 4 spec.; 77-82
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Ca50Mg20Zn12Cu18 Alloy
Autorzy:
Hrapkowicz, B.
Lesz, S.T.
Powiązania:
https://bibliotekanauki.pl/articles/379850.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Calcium alloy
implant
metallic glass
Magnesium
Calcium
Zinc
Copper
corrosion
corrosion resistance
stopy wapnia
szkło metaliczne
magnez
wapń
cynk
miedź
korozja
odporność na korozję
Opis:
The Ca50Mg20Zn12Cu18 was assessed with different methods in order to characterize its basic characteristics, and to determine whether the amorphous alloy of such composition would be applicable as an implant material. The XRD analysis was conducted to conclude the structure of the initial material. The Ca50Mg20Zn12Cu18 ingot sample demonstrates crystalline structure containing two main intermetallic phases, however as-cast plates show features of an amorphous material, revealing the characteristic amorphous halo on the x-ray patterns. It was confirmed by the scanning electron microscopy method and fracture images revealing chevron pattern morphology with shell type fracture. Corrosion resistance, was studied using the potentiostatic analysis. The amorphous samples show higher resistance than the crystalline one. Post corrosion surface of the Ca50Mg20Zn12Cu18 alloy exhibits high concentration of magnesium and calcium hydroxides, forming the globular structures in large aggregates of spherical units.
Źródło:
Archives of Foundry Engineering; 2019, 1; 75-82
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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