Corrosion behavior of porous ZrO2 ceramic coating on AZ31B magnesium alloy

被引：40

作者：

Gao, Yue'e ^{[1
]}

Zhao, Lianfu ^{[1
]}

Yao, Xiaohong ^{[1
]}

Hang, Ruiqiang ^{[1
]}

Zhang, Xiangyu ^{[1
]}

Tang, Bin ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Res Inst Surface Engn, YingZe West St, Taiyuan 030024, Shanxi, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2018年 / 349卷

基金：

中国国家自然科学基金;

关键词：

Magnesium alloy; Zirconia ceramic coating; Magnetron sputtering; Micro-arc oxidation; Corrosion resistance; PLASMA ELECTROLYTIC OXIDATION; MG ALLOY; PEO COATINGS; RESISTANCE; SURFACE; MICROSTRUCTURE; BIOACTIVITY; IMPLANTS; DESIGN;

D O I：

10.1016/j.surfcoat.2018.06.018

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Magnesium alloys have been recognized as promising implant materials because of their biodegradability. However, rapid degradation due to electrochemical corrosion compromises their cytocompatibility and mechanical integrity. In the present work, a porous ZrO2 ceramic coating was constructed on the surface of AZ31B magnesium alloy (ZrO2-AZ31B) to improve its corrosion resistance. The corrosion resistance of the coating was evaluated in simulated body fluid solution by electrochemical techniques. Higher open circuit potential, impedance and polarization resistance of ZrO2-AZ31B indicate it has a better corrosion resistance than that of AZ31B substrate in simulated body fluid solution. The results suggest that fabricating a ZrO2 ceramic coating on magnesium alloys is an effective method to decrease the degradation rate of magnesium alloys thereby better matching clinical requirements.

引用

页码：434 / 441

页数：8

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