Effects of alloying elements, Cr, Mo and N on repassivation characteristics of stainless steels using the abrading electrode technique

被引：123
作者：
Lee, Jae-Bong [1 ]
机构：
[1] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2006年 / 99卷 / 2-3期
关键词：
repassivation; passive film; abrading electrode technique; electrochemical impedance spectroscopy (EIS); charge transfer resistance (R-ct);
D O I：
10.1016/j.matchemphys.2005.10.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cr, Mo and N are important alloying elements for passive film formation and repassivation but their roles in passive film still need explainable. In order to investigate effects of alloying elements on the stability of passive film and its repassivation, ferritic stainless steels such as Fe-Cr and Fe-Cr-Mo alloys and austenitic stainless steels such as type 316L, and type 316LN were examined. The electrochemical characteristics of the passive film were investigated by in situ dc and ac electrochemical methods. The resistance to localized corrosion is believed to have much to do with the repassivation of the passive film and its stability. The effects of alloying elements on the current transients were systematically examined by using the abrading electrode technique and electrochemical impedance spectroscopy (EIS). The experimental results were analyzed in order to elucidate the relationship between passive film stability, repassivation, and alloying elements. (c) 2005 Elsevier B.V. All rights reserved.
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页码：224 / 234
页数：11
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