Effect of Impurity Fe Concentration on the Corrosion Behavior of Mg-14 mass%Li-1 mass%Al Alloy

被引：12
|
作者：
Morishige, Taiki [1 ]
Ueno, Kumiko [1 ]
Okano, Masahiro [2 ]
Goto, Takayuki [3 ]
Nakamura, Eiji [3 ]
Takenaka, Toshihide [1 ]
机构：
[1] Kansai Univ, Dept Chem & Mat Engn, Suita, Osaka 5648680, Japan
[2] Kansai Univ, Grad Sch Sci & Engn, Suita, Osaka 5648680, Japan
[3] Santoku Corp, Kobe, Hyogo 6580013, Japan
来源：
MATERIALS TRANSACTIONS | 2014年 / 55卷 / 09期
关键词：
magnesium-lithium alloy; corrosion rate; impurity; exfoliation corrosion; MAGNESIUM;
D O I：
10.2320/matertrans.MAW201405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mg-Li system alloys with over 11 mass% Li have an excellent cold-workability in Mg alloys due to the bcc-structured crystal system. However this system alloys have poor corrosion resistance caused by Li solid-solution alloy. The corrosion resistance of conventional hcp-Mg alloys is influenced by the composition of impurity elements. Particularly, minute iron element deteriorates the corrosion resistance of Mg alloy and there is a threshold concentration on the corrosion rate in Mg alloys. In this study, the effect of iron element on the corrosion resistance of Mg-Li alloy was investigated by addition of iron. The corrosion resistance of Mg-Li with no Fe addition was higher than conventional Mg alloy. The corrosion rate of Mg-Li alloy increased with increasing iron concentration. However, there is no threshold iron concentration affected to the corrosion resistance on Mg-Li alloy.
引用
收藏
页码：1506 / 1509
页数：4
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