摘要
Biodegradable magnesium(Mg)-based alloys have aroused great concern owing to their promising characteristics as temporary implants for orthopedic application.But their undesirably rapid corrosion rate under physiological conditions has limited the actual clinical application.This study reports the use of a novel biomimetic polyelectrolyte multilayer template,based on polyvinylpyrrolidone(PVP)and polyacrylic acid(PAA)via layerby-layer(LbL)assembly,to improve the corrosion resistance of the alloy.Surface characterization techniques(field-emission scanning electron microscopy,Fourier transform infrared(FTIR)spectrophotometer and X-ray diffractometer)confirmed the formation of biomineralized Ca–P coating on AZ31 alloy.Both hydrogen evolution and electrochemical corrosion tests demonstrated that the corrosion protection of the polyelectrolyte-induced Ca–P coating on AZ31 alloy.The formation mechanism of biomineralized Ca–P coating was proposed.
基金
This work was supported by the National Natural Science Foundation of China(51571134)
Shandong Provincial Natural Science Foundation(ZR2017BEM002)
Shandong University of Science and Technology Research Fund(2014TDJH104).
作者简介
Corresponding author:Rong-Chang Zeng,College of Materials Science and Engineering,Shandong University of Science and Technology,Qingdao,266590,China.E-mail addresses:rczeng@foxmail.com;Lan-Yue Cui,E-mail addresses:cuily@sdust.edu.cn;Shen-Cong Cheng,E-mail addresses:1194154697@qq.com;Lu-Xian Liang,E-mail addresses:2275483214@qq.com;Jing-Chao Zhang,E-mail addresses:1049074353@qq.com;Shuo-Qi Li,E-mail addresses:lishuoqi@sdust.edu.cn;Zhen-Lin Wang,E-mail addresses:wzl@cqut.edu.cn。
