Effects of Temperature, Cl- Concentration and pH on Electrochemical Behavior of NiTi Shape Memory Alloy

J Chin Soc Corr Pro

2006, Vol. 26

Issue (4): 202-206 DOI:

Research Report

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Effects of Temperature, Cl- Concentration and pH on Electrochemical Behavior of NiTi Shape Memory Alloy

;;Enhou Han;

江苏省江阴市滨江开发区澄江中路151号中国贝卡尔特钢帘线有限公司技术部;李年杏收。邮编：214434 江苏省江阴市滨江开发区澄江中路151号中国贝卡尔特钢帘线有限公司技术部;李年杏收。邮编：214434

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Abstract Potentiodynamic polarization measurement was used to study effects of temperature,Cl- concentration and pH on the electrochemical behavior of NiTi shape memory alloy (SMA)in the synthetic saliva according to the orthogonal testing method.The results showed that temperature,Cl- concentration and pH had great influence on the pitting behavior of NiTi.The breakdown potential was most negative at 25 ℃,and it increased with the increase of temperature.The breakdown potential kept in high level when the Cl- concentration was not more than 0.1 mol/L,while it dropped sharply with the continuous increase of Cl- concentration. The breakdown potential was highest at the solution of pH 6.0.

Key words: NiTi shape memory alloy potentiodynamic polarization measurement orthogonal testing method biocompa

Received: 25 April 2005

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Enhou Han. Effects of Temperature, Cl- Concentration and pH on Electrochemical Behavior of NiTi Shape Memory Alloy. J Chin Soc Corr Pro, 2006, 26(4): 202-206 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2006/V26/I4/202

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