In vitro corrosion degradation behaviour of Mg-Ca alloy in the presence of albumin

被引：149
|
作者：
Liu, C. L. [1 ,2 ]
Wang, Y. J. [3 ]
Zeng, R. C. [2 ]
Zhang, X. M. [2 ]
Huang, W. J. [2 ]
Chu, P. K. [1 ]
机构：
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
[2] Chongqing Univ Technol, Sch Mat Sci & Engn, Chongqing 400050, Peoples R China
[3] Chongqing Univ Technol, Sch Appl Sci & Technol, Chongqing 400050, Peoples R China
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 10期
关键词：
Magnesium; EIS; Corrosion; Passive films; RARE-EARTH ALLOY; MAGNESIUM ALLOY; VIVO CORROSION; BIODEGRADATION; AZ91;
D O I：
10.1016/j.corsci.2010.06.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The in vitro degradation behaviour of Mg-Ca alloy was studied in the presence of albumin by in-situ observation, hydrogen evolution method and various electrochemical techniques. The corrosion and hydrogen evolution rates decreased and the formation of filiform corrosion induced by Cl- was also significantly inhibited due to the adsorption of albumin molecule. Moreover, the higher the concentration of albumin, the higher is the inhibitive effect. The EIS results further show that addition of albumin enhanced the charge transfer resistance and film resistance at the open-circuit potential. The synergistic effect of the negatively charged adsorbed albumin molecule and OH- has been discussed. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3341 / 3347
页数：7
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