Electrochemical Behavior of TiNiCu Shape Memry Alloy in Simulated Body Fluid

Authors

Cheng-hao LIANG, School of Chem. Engin., Dalian Univ. of Techn., Dalian 116012, ChinaFollow
Hong-yan SUI, School of Chem. Engin., Dalian Univ. of Techn., Dalian 116012, China

Corresponding Author

Cheng-hao LIANG(liangch@chem.dlut.edu.cn)

Abstract

The study of TiNiCu shape memory alloys (SMA) in Hank's simulated body fluidwas carried out. The results showed that narrow passive range was found in acid environment andactive anodic dissolution was discovered at 100~150 mV vs SCE on anodic polarization cure ofTiNiCu SMA. Temperature had little effect on anodic polarization. With the decrease of pH andthe increase of Cl^- concentration ,pitting corrosion potential (E_b) shifted negatively. The electrochemical capability of TiNiCu SMA was inferior to that of TiNi SMA. Observations by means ofXRD and SEM indicate that TiNiCu SMA is not in single crystal structure, which caused irregularelectrochemical behavior and might form the original cell, moreover Ti₂Ni intermetallic phase andcopper with loose structure rich on surface may accelerate the anodic dissolution of specimens.

Keywords

Shape memory alloy, Simulated body fluid, Pitting corrosion potential

DOI Link

https://doi.org/10.61558/2993-074X.3252

Publication Date

2001-05-28

Online Available Date

2001-05-28

Revised Date

2001-03-14

Received Date

2001-01-19

Recommended Citation

Cheng-hao LIANG, Hong-yan SUI. Electrochemical Behavior of TiNiCu Shape Memry Alloy in Simulated Body Fluid[J]. Journal of Electrochemistry, 2001 , 7(2): 210-214.
DOI: 10.61558/2993-074X.3252
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss2/14