Corrosion behaviour of Ti-6Al-4V alloy in concentrated hydrochloric and sulphuric acids

被引：54
|
作者：
Mogoda, AS [1 ]
Ahmad, YH [1 ]
Badawy, WA [1 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Chem, Giza, Egypt
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 2004年 / 34卷 / 09期
关键词：
corrosion; hydrochloric acid; sulphuric acid; titanium; Ti-6Al-4V alloy;
D O I：
10.1023/B:JACH.0000040447.26482.bd
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Open-circuit potential, polarization and electrochemical impedance spectroscopy (EIS) measurements were used to investigate the corrosion behaviour of Ti-6Al-4V alloy in H2SO4 and HCl solutions. The corrosion rate of the alloy was found to increase with increasing acid concentration. The corrosion behaviour of the alloy was compared to that of pure titanium in both acids. The results showed that the alloy is more corrosion resistant than pure titanium in the investigated solutions. The apparent activation energies of the corrosion process for titanium are lower than those of the alloy in the same solutions, which reflects the higher corrosion resistance of the alloy.
引用
收藏
页码：873 / 878
页数：6
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