The role of second phases in the corrosion behavior of Mg-5Zn alloy

被引：163
作者：
Song, Yingwei [1 ]
Han, En-Hou [1 ]
Shan, Dayong [1 ]
Yim, Chang Dong [2 ]
You, Bong Sun [2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
[2] Korea Inst Mat Sci, Chang Won 641831, South Korea
来源：
CORROSION SCIENCE | 2012年 / 60卷
基金：
中国国家自然科学基金;
关键词：
Magnesium; Weight loss; Polarization; Pitting corrosion; AZ91D MAGNESIUM ALLOY; NACL SOLUTION; BETA-PHASE; MICROSTRUCTURE; CHLORIDE; SURFACE; FILMS;
D O I：
10.1016/j.corsci.2012.03.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The MgxZny second phases in Mg-5Zn alloy were adjusted by T4 and T6 treatment, and then the role of second phases in the corrosion behavior of Mg-5Zn alloy was investigated. The dimension of the MgxZny second phases is only some hundred nanometers. They present discrete distribution on the boundaries of the as-received sample and continuous distribution in the T6 sample. The T4 sample in absence of second phases exhibits the best corrosion resistance while the T6 sample with the largest volume fraction of second phases exhibits the worst one, which can be attributed to the micro-cathodic effect of second phases. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：238 / 245
页数：8
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