Effect of corrosion product films on the in vitro degradation behavior of Mg-3%Al-1%Zn(in wt%) alloy in Hank's solution  

作　　者：B.J.Wang D.K.Xu J.H.Dong W.Ke 

机构地区：[1]School of Environmental and Chemical Engineering, Shenyang Ligong University [2]CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences [3]Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences

出　　处：《Journal of Materials Science & Technology》2018年第10期1756-1764,共9页材料科学技术（英文版）

基　　金：supported by the National Key Research and Development Program of China project(Grant No.2016YFB0301105);the Strategic New Industry Development Special Foundation of Shenzhen(No.JCYJ20170306141749970);the National Natural Science Foundation of China(Grant Nos.51701129,51271183 and 51301172);the National Basic Research Program of China("973 Program",Grant No.2013CB632205);the Innovation Fund of Institute of Metal Research(IMR);Chinese Academy of Sciences(CAS)

摘　　要：Through investigating the corrosion behavior of an as-extruded Mg-3wt%gAl-lwt%Zn （AZ31） alloy in a simulated physiological fluid of Hank＇s solution, it demonstrates that the corrosion process was depen- dent on the immersion time. Further analyses revealed that the highest corrosion resistance could be obtained at 24 h due to the formation of a compact layer of corrosion products on the sample surface. With increasing the immersion time to up to 48 h, the thickness of surface films increased gradually but obvious de-bonding of such film from the substrate could take place, resulting in a certain resilience of the overall corrosion resistance.Through investigating the corrosion behavior of an as-extruded Mg-3wt%gAl-lwt%Zn （AZ31） alloy in a simulated physiological fluid of Hank＇s solution, it demonstrates that the corrosion process was depen- dent on the immersion time. Further analyses revealed that the highest corrosion resistance could be obtained at 24 h due to the formation of a compact layer of corrosion products on the sample surface. With increasing the immersion time to up to 48 h, the thickness of surface films increased gradually but obvious de-bonding of such film from the substrate could take place, resulting in a certain resilience of the overall corrosion resistance.

关 键 词：MAGNESIUM Surface layer Corrosion product Interface 

分 类 号：TG172[金属学及工艺—金属表面处理]