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
收藏
页码：434 / 441
页数：8
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