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

页码：203 / 210

页数：8

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