The mechanism of hydrogen-induced pitting corrosion in duplex stainless steel studied by SKPFM

被引：137
作者：
Li, M. [1 ]
Guo, L. Q. [1 ]
Qiao, L. J. [1 ]
Bai, Y. [1 ]
机构：
[1] Univ Sci & Technol Beijing, Ctr Corros & Protect, Key Lab Environm Fracture MOE, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2012年 / 60卷
基金：
中国国家自然科学基金;
关键词：
Stainless steel; AFM; Hydrogen absorption; Pitting corrosion; SCANNING KELVIN PROBE; THIN ELECTROLYTE LAYERS; MICROSTRUCTURE EVOLUTION; ATMOSPHERIC CORROSION; ANNEALING TREATMENT; FORCE MICROSCOPY; WORK FUNCTION; BEHAVIOR; METALS; ALUMINUM;
D O I：
10.1016/j.corsci.2012.04.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of the hydrogen charging on the pitting corrosion in duplex stainless steel was investigated by the scanning Kelvin probe force microscopy. The Volta potential maps of the hydrogen charged sample revealed that some low potential areas emerged at the ferrite/austenite boundaries or inside the ferrite phases, which may be considered as preferential nucleation sites of pitting corrosion induced by hydrogen. Moreover, a continuous evolution of Volta potential images indicated that the effects of hydrogen on ferrite and austenite were different due to different hydrogen behavior in two phases, which was confirmed by the work function of ferrite and austenite. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：76 / 81
页数：6
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