In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline
Mg-based metallic glasses show attractive properties making it as potential materials for implants in biomedical applications, especially compared to traditional crystalline Mg alloys. In this study, the corrosion behavior of melt-spun glassy Mg67Zn28Ca5 ribbons before and after heat treatment at di...
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sg-ntu-dr.10356-996452020-03-07T13:22:19Z In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline Wang, Yongsheng Tan, Ming Jen Pang, Jianjun Wang, Zhaomeng Jarfors, Anders W. E. School of Mechanical and Aerospace Engineering A*STAR SIMTech DRNTU::Engineering::Mechanical engineering Mg-based metallic glasses show attractive properties making it as potential materials for implants in biomedical applications, especially compared to traditional crystalline Mg alloys. In this study, the corrosion behavior of melt-spun glassy Mg67Zn28Ca5 ribbons before and after heat treatment at different temperatures was systematically investigated in simulated body fluid. Electrochemical tests and the rate of hydrogen evolution indicated that the corrosion behavior strongly depended on the structure of ribbons. The slowest corrosion rate (strongest corrosion resistance) was achieved for the ribbon with a partially crystallized structure (metastable crystalline Mg102.08Zn39.6 and amorphous matrix). Surface morphology analysis revealed that amorphous ribbons were more susceptible to pitting corrosion than the corresponding partially and fully crystallized ribbons. A Zn-rich passivation layer was detected on the surface of ribbons after immersion test, indicating the corrosion was mainly caused by the loss of Mg- and Ca-containing components, resulting in the enrichment of metallic Zn with improved corrosion resistance as the outcome. 2013-07-11T06:32:00Z 2019-12-06T20:09:48Z 2013-07-11T06:32:00Z 2019-12-06T20:09:48Z 2012 2012 Journal Article https://hdl.handle.net/10356/99645 http://hdl.handle.net/10220/11209 10.1016/j.matchemphys.2012.03.116 en Materials chemistry and physics © 2012 Elsevier B. V. |
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DRNTU::Engineering::Mechanical engineering Wang, Yongsheng Tan, Ming Jen Pang, Jianjun Wang, Zhaomeng Jarfors, Anders W. E. In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline |
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Mg-based metallic glasses show attractive properties making it as potential materials for implants in biomedical applications, especially compared to traditional crystalline Mg alloys. In this study, the corrosion behavior of melt-spun glassy Mg67Zn28Ca5 ribbons before and after heat treatment at different temperatures was systematically investigated in simulated body fluid. Electrochemical tests and the rate of hydrogen evolution indicated that the corrosion behavior strongly depended on the structure of ribbons. The slowest corrosion rate (strongest corrosion resistance) was achieved for the ribbon with a partially crystallized structure (metastable crystalline Mg102.08Zn39.6 and amorphous matrix). Surface morphology analysis revealed that amorphous ribbons were more susceptible to pitting corrosion than the corresponding partially and fully crystallized ribbons. A Zn-rich passivation layer was detected on the surface of ribbons after immersion test, indicating the corrosion was mainly caused by the loss of Mg- and Ca-containing components, resulting in the enrichment of metallic Zn with improved corrosion resistance as the outcome. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Wang, Yongsheng Tan, Ming Jen Pang, Jianjun Wang, Zhaomeng Jarfors, Anders W. E. |
format |
Article |
author |
Wang, Yongsheng Tan, Ming Jen Pang, Jianjun Wang, Zhaomeng Jarfors, Anders W. E. |
author_sort |
Wang, Yongsheng |
title |
In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline |
title_short |
In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline |
title_full |
In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline |
title_fullStr |
In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline |
title_full_unstemmed |
In vitro corrosion behaviors of Mg67Zn28Ca5 alloy : from amorphous to crystalline |
title_sort |
in vitro corrosion behaviors of mg67zn28ca5 alloy : from amorphous to crystalline |
publishDate |
2013 |
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https://hdl.handle.net/10356/99645 http://hdl.handle.net/10220/11209 |
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1681046948567580672 |