Pitting corrosion of Cu-Zn-Al shape memory alloy in simulated uterine fluid

被引：0
|
作者：
Chen, BY
Liang, CH [1 ]
Fu, DJ
机构：
[1] Dalian Univ Technol, Sch Chem Engn, Dalian 116012, Peoples R China
[2] State Key Lab Corros & Protect, New Delhi 110016, India
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2005年 / 21卷 / 02期
关键词：
Cu-Zn-Al shape memory alloy; simulated uterine fluid; pitting corrosion;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrochemical test technology and surface analysis method were employed to investigate the pitting corrosion of Cu-Zn-Al shape memory alloy in simulated uterine fluid. The results showed that the breakage of the breaking-renovating equilibrium of surface layers resulted in the pitting corrosion of Cu-Zn-Al shape memory alloy in simulated uterine fluid. The development of pitting corrosion was controlled by dissolution of surface layers. The critical pitting corrosion potential was 1.70 V-SCE. The kinetics equation for the development of pitting corrosion for Cu-Zn-Al shape memory alloy in simulated uterine fluid was i(0) = 465.68 t(-0.5) + 1.5. Pitting appearances of pits could be two types: tortoise-shell, and anomaly abscess. Cl- ion facilitated the pitting corrosion of Cu-Zn-Al shape memory alloy by competing adsorption and concentrating on alloy surface at high positive potential.
引用
收藏
页码：226 / 230
页数：5
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