Effect of Strontium on Corrosion Properties of AZ91 Magnesium Alloy

被引：17
|
作者：
Kim, W. C. [1 ]
Nam, N. D. [1 ]
Kim, J. G. [1 ]
Lee, J. I. [2 ]
机构：
[1] Sungkyunkwan Univ, Dept Adv Mat Sci & Engn, Suwon 440746, South Korea
[2] Chungju Natl Univ, Dept Adavanced Mat Engn, Iryu Myeon 380702, Chungju, South Korea
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2011年 / 14卷 / 11期
关键词：
MG-AL ALLOYS; MECHANICAL-PROPERTIES; BETA-PHASE; MICROSTRUCTURE; BEHAVIOR; RESISTANCE; ELEMENTS; AZ31; CA;
D O I：
10.1149/2.021111esl
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The corrosion properties of AZ91 and its alloy with 0.33 wt.% strontium were investigated in a 200 ppm Cl- solution. The microstructures of the alloys were examined by X-ray diffraction and electron probe X-ray microanalysis. Potentiodynamic polarization and electrochemical impedance spectroscopy were used to evaluate the corrosion resistance of the alloys. AZ91 with 0.33 wt.% Sr addition showed better corrosion resistance than AZ91 due to the increase of second phases (Mg2Sr, Al4Sr, and AlSr compounds) at the grain boundary, refined grain size and more continuously dispersed beta phase. (C) 2011 The Electrochemical Society. [DOI: 10.1149/2.021111esl] All rights reserved.
引用
收藏
页码：C21 / C24
页数：4
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