航空用油介质和NaCl溶液中钛合金电化学特性

刘建华; 尚海波; 吴昊; 李松梅

航空用油介质和NaCl溶液中钛合金电化学特性

1.
北京航空航天大学材料科学与工程学院北京 100083
2. 沈阳飞机工业(集团)有限公司, 沈阳 110034

详细信息

作者简介:
刘建华(1957-),男,湖南汉寿人,教授, liujh@buaa.edu.cn.

中图分类号: TG 1462⁺³
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- 被引次数: 0
出版历程
- 收稿日期: 2004-04-28
- 网络出版日期: 2004-10-31

Electrochemical characteristics of titanium alloy in engine oil and NaCl solution

1.
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Shenyang Aircraft Corporation, Shenyang 110034, China

摘要

摘要: 采用动电位扫描法研究了Ti-6Al-1.5Cr-2Zr钛合金在3^#煤油和928滑油等高阻值油介质中的电化学极化特性.对于该新型钛合金电极在这2种航空油介质中自腐电位、极化电阻、腐蚀电流等电化学参数和相应的极化规律进行了研究.采用浸泡试验研究了该钛合金在3^#煤油和928滑油中的腐蚀行为.结果表明钛合金在油介质中无明显腐蚀.对钛合金电极在高阻值油介质中电化学特性进行比较,研究了其在3.5%NaCl水溶液中的电化学行为,该钛合金电极在水溶液中的自腐蚀电位为-0.18V,在极化曲线上钝化区为0.27~1.24V,致钝电位为0.23V,致钝电流密度为0.31×10^-4A/cm².
- 钛合金 /
- 电化学 /
- 腐蚀
Abstract: The electrochemical characteristics of a new titanium alloy Ti-6Al-1.5Cr-2Zr in 3^# kerosene and 928 lubricating oil with high resistance were studied by using potentiodynamic polarization. The electrochemical properties including the laws of polarization, open-circuit potential, linear polarization resistance and variation of corrosion current were investigated. The corrosion behaviors of titanium alloy were investigated by using immersion method in 3^# kerosene and 928 lubricating oil. No visible corrosion appeared in the oil medium. The electrochemical characteristics of the alloy in 3.5% NaCl solution were also studied to compare that in the oil medium. The open-circuit potential was -0.18V, passivation potential was 0.23V, passivation current density was 0.31×10^-4A/cm² in 3.5%NaCl solution and the passivation area potential was in the range of 0.27~1.24V in 3.5% NaCl solution.
- titanium alloys /
- electrochemistry /
- corrosion

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