Improving the corrosion behavior of magnesium alloys with a focus on AZ91 Mg alloy intended for biomedical application by microstructure modification and coating

被引:12
作者
Akbarzadeh, Fatemeh Zahra [1 ]
Ghomi, Erfan Rezvani [2 ]
Ramakrishna, Seeram [2 ]
机构
[1] Babol Noshirvani Univ Technol, Dept Mat Engn, Babol, Iran
[2] Natl Univ Singapore, Ctr Nanotechnol & Sustainabil, Dept Mech Engn, Blk E3,05-12,2 Engn Dr 3,Singapore, Singapore 117581, Singapore
关键词
AZ91 Mg alloy; implant; corrosion; microstructure; crystallographic texture; coating; PLASMA ELECTROLYTIC OXIDATION; SOL-GEL COATINGS; POWDER-METALLURGY; MECHANICAL-PROPERTIES; IMPLANT APPLICATIONS; HYDROXYAPATITE; PROTECTION; COMPOSITE; ELECTRODEPOSITION; SURFACE;
D O I
10.1177/09544119221105705
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Magnesium alloys such as AZ91 have received much attention due to their attractive properties, including biocompatibility and lightness. Although magnesium is a potential candidate for implant application, due to its rapid degradation in the physiological environment, there are still some challenges to using it as biocompatible implants. In this regard, various techniques such as microstructure modification and coating are utilized to moderate the degradation rate of magnesium alloys. Therefore, efforts are being made to conduct more extensive research to produce magnesium implants with acceptable corrosion resistance. In this literature review, an overview of the history of research on the corrosion behavior, biodegradability, microstructure deformation mechanisms, crystallographic texture in magnesium alloys with a focus on AZ91 Mg alloy, is provided. In addition, the necessity of improving the properties of AZ91 Mg alloy by the two methods of improving microstructure and coating, and existing innovations in these methods are investigated.
引用
收藏
页码:1188 / 1208
页数:21
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