Characterization of Passive Films Formed on As-received and Sensitized AISI 304 Stainless Steel

被引：5
作者：
Yubo Zhang [1 ,2 ,3 ,4 ]
Hongyun Luo [1 ,2 ,3 ]
Qunpeng Zhong [1 ,2 ,3 ]
Honghui Yu [1 ,2 ,3 ]
Jinlong Lv [4 ,5 ]
机构：
[1] Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics
[2] The Collaborative Innovation Center for Advanced Aero-Engine (CICAAE), Beijing University of Aeronautics and Astronautics
[3] Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beijing University of Aeronautics and Astronautics
[4] China Waterborne Transport Research Institute
[5] Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University
来源：
Chinese Journal of Mechanical Engineering | 2019年 / 32卷 / 02期
关键词：
304 stainless steel; Sensitization; Passive films; XPS; Impedance;
D O I：
暂无
中图分类号：
TG174.4 [金属表面防护技术]; TG142.1 [钢的组织与性能];
学科分类号：
080503 ; 080502 ;
摘要：
The current research of corrosion resistance of stainless steels mainly focuses on characterization of the passive films by point defect mode and mixed-conduction model. The corrosion resistance of the passive films formed on asreceived and sensitized AISI304 stainless steel in borate bu er solution were evaluated in this paper. The degree of sensitization and corrosion resistance of AISI304 stainless steels was evaluated by double loop electrochemical potentiodynamic reactivation and electrochemical impedance spectroscopy. The passive films formed on the stainless steels were studied by XPS technique. It was found that as-received specimen had higher pitting corrosion potential and corrosion resistance than sensitized one. The Mott-Schottky results showed that sensitized stainless steel had more defects in the passive film than as-received one. The compositions of the passive films were mainly Cr and Fe oxides according to XPS results.
引用
收藏
页码：61 / 72
页数：12
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