Electrochemical and passivation behavior investigation of ferritic stainless steel in alkaline environment

被引：71
|
作者：
Luo, Hong [1 ]
Su, Huaizhi [2 ]
Dong, Chaofang [3 ]
Xiao, Kui [3 ]
Li, Xiaogang [3 ]
机构：
[1] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China
[2] Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China
[3] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 96卷
基金：
中国国家自然科学基金;
关键词：
Stainless steel; AES; Concrete; Passive film; SEMICONDUCTING PROPERTIES; IMPEDANCE SPECTROSCOPY; PITTING CORROSION; REINFORCING STEEL; DIFFERENT PH; FILMS; CONCRETE; ELECTRODES; MEDIA;
D O I：
10.1016/j.conbuildmat.2015.08.052
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The electrochemical behavior of 430 ferritic stainless steel in alkaline environment was evaluated by potentiodynamic curves, electrochemical impedance spectroscopy (EIS), Mott-Schottky, X-ray photoelectron spectroscopy (XPS) and Auger Electronic Spectrometer (AES). The results confirmed that n-type semiconducting behavior of the passive film is formed on the surface of 430 ferritic stainless steel after immersion in the alkaline solution. Based on the evaluations of the passive film by AES and XPS analysis, it can be concluded that the primary constituents of the passive film is (Cr, Fe)-oxides, like the Cr2O3, Cr (OH)(3), FeOOH and Fe3O4. In addition, no chloride ions are detected in the passive film. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：502 / 507
页数：6
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