Effect of impurity Fe on corrosion behavior of AM50 and AM60 magnesium alloys

被引：68
|
作者：
Matsubara, Hiroshi [1 ]
Lchige, Yasuhiro [1 ]
Fujita, Kazuaki [1 ]
Nishiyama, Hiroshi [1 ]
Hodouchi, Kazunori [1 ]
机构：
[1] Nagaoka Univ Technol, Dept Mat Sci & Technol, Nagaoka, Niigata 9402188, Japan
来源：
CORROSION SCIENCE | 2013年 / 66卷
关键词：
Magnesium; Alloy; Pitting corrosion; Inclusion; EPMA; AC-IMPEDANCE SPECTROSCOPY; AZ91; RESISTANCE; MECHANISMS; ADDITIONS; ND;
D O I：
10.1016/j.corsci.2012.09.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, the corrosion behavior of AM magnesium alloys (AM50 and AM60) in 5% NaCl solution was examined. The corrosion rate was found to depend on the impurity concentration in the alloy, and increased with Fe/Mn ratio. Inclusions were present within the alloys, with compositions of 40-80% Al, 20-60% Mn, and 0-10% Fe. It was determined that these inclusions acted as initiation points for corrosion. In addition, corrosion preferentially occurred at inclusions with a high Fe content, and the Fe content of inclusions was found to be proportional to that in the alloy itself. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：203 / 210
页数：8
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