Effect of mischmetal on the corrosion properties of Mg-5Al alloy

被引：44
作者：
Nam, N. D. [1 ]
Kim, W. C. [1 ]
Kim, J. G. [1 ]
Shin, K. S. [2 ]
Jung, H. C. [2 ]
机构：
[1] Sungkyunkwan Univ, Dept Adv Mat Engn, Suwon 440746, South Korea
[2] Seoul Natl Univ, Sch Mat Sci & Engn, Magnesium Technol Innovat Ctr, Seoul 151744, South Korea
来源：
CORROSION SCIENCE | 2009年 / 51卷 / 12期
关键词：
Magnesium; EIS; Polarization; Passive film; Pitting corrosion; MG-AL ALLOYS; MAGNESIUM ALLOY; AUTOMOTIVE APPLICATIONS; NACL SOLUTION; BEHAVIOR; AZ91; MICROSTRUCTURE; INDUSTRY; ELEMENT; SI;
D O I：
10.1016/j.corsci.2009.08.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of mischmetal (Mm) on the corrosion properties of Mg-5Al alloy was investigated by electrochemical techniques in 0.01 M NaCl solution as the alkaline condition (pH 12) and surface analyses. The electrochemical tests indicated that the pitting potential, time to pitting initiation, and charge transfer resistance of the Mg-5Al specimens increased with increasing Mm content. Surface analyses indicated that Mm promoted the formation of passive film in the absence of Mm products. In addition, the benefits of Mm addition are the refinement of the precipitates and reduction in grain size. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2942 / 2949
页数：8
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