Electrochemical behavior of Cu-Zn-Al shape memory alloy after surface modification by electroless plated Ni-P
来源期刊：Rare Metals2004年第4期
论文作者：LIANG Chenghao, CHEN Bangyi, CHEN Wan, and WANG HuaSchool of Chemical Engineering, Dalian University of Technology, Dalian , China
文章页码：317 - 321
摘 要：<正>The electrochemical behavior of Cu-Zn-Al shape memory alloy （SMA） with and without electroless plated Ni-P was investigated by electrochemical methods in artificial Tyrode’s solution. The results showed that Cu-Zn-Al SMA engendered dezincification corrosion in Tyrode’s solution. The anodic active current densities as well as electrochemical dissolution sensitivity of the electroless plated Ni-P Cu-Zn-Al SMA increased with Nad concentration rising, pH of solution decreasing and environmental temperature uprising. X-ray diffraction analysis indicated that after surface modification by electroless plated Ni-P, an amorphous plated film formed on the surface of Cu-Zn-Al SMA. This film can effectively isolate matrix metal from corrosion media and significantly improve the electrochemical property of Cu-Zn-Al SMA in artificial Tyrode’s solution.
LIANG Chenghao, CHEN Bangyi, CHEN Wan, and WANG HuaSchool of Chemical Engineering, Dalian University of Technology, Dalian 116012, China
摘 要：<正>The electrochemical behavior of Cu-Zn-Al shape memory alloy （SMA） with and without electroless plated Ni-P was investigated by electrochemical methods in artificial Tyrode’s solution. The results showed that Cu-Zn-Al SMA engendered dezincification corrosion in Tyrode’s solution. The anodic active current densities as well as electrochemical dissolution sensitivity of the electroless plated Ni-P Cu-Zn-Al SMA increased with Nad concentration rising, pH of solution decreasing and environmental temperature uprising. X-ray diffraction analysis indicated that after surface modification by electroless plated Ni-P, an amorphous plated film formed on the surface of Cu-Zn-Al SMA. This film can effectively isolate matrix metal from corrosion media and significantly improve the electrochemical property of Cu-Zn-Al SMA in artificial Tyrode’s solution.
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