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

页码：1506 / 1509

页数：4

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