Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution

doi:10.1149/1945-7111/ac595b

IMR OpenIR

	Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution
	Yuan, Xuwen 1,2,3; Wang, Xuan 2,3; Yang, Huaiyu 2
通讯作者	Yang, Huaiyu(hyyang@imr.ac.cn)
	2022-03-01
发表期刊	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
ISSN	0013-4651
卷号	169 期号:3 页码:9
摘要	The degradation behavior of four prepassivated stainless steels (SSs) in the alkaline solutions with different Cl- concentrations and pH values were investigated by cyclic potentiodynamic polarization (CPP), electrochemical impedance spectroscopy (EIS) and Mott-Schottky analysis and the X-ray photoelectron spectroscopy (XPS). The results indicated that the pH value and Cl- concentration, together with the phase ratio difference in the microstructure of SS, played a critical role in the degradation process of passive film. At low pH and high Cl- concentration, the passive film gradually enriched in Fe3+ and Cr3+ species and depleted in Fe2+ oxides and its self-regeneration process became more difficult. As the pH decreased, the passive film exhibited clear n-type and p-type semiconductor characteristics more clearly, and the decrease in dopant density well reflected the changes in Fe2+/Fe3+ ratio and electrochemical behavior. Based on the viewpoint of adsorption balance between OH- with inhibitory effect and Cl- with promotion effect on the degradation process, a mechanism for the degradation process of prepassivation film was proposed.
资助者	National Basic Research Program of China
DOI	10.1149/1945-7111/ac595b
收录类别	SCI
语种	英语
资助项目	National Basic Research Program of China[2015CB655105]
WOS研究方向	Electrochemistry ; Materials Science
WOS类目	Electrochemistry ; Materials Science, Coatings & Films
WOS记录号	WOS:000767563800001
出版者	ELECTROCHEMICAL SOC INC
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/173196
专题	中国科学院金属研究所
通讯作者	Yang, Huaiyu
作者单位	1.Hubei Univ Automot Technol, Dept Mat Sci & Engn, Shiyan 442002, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Xuwen,Wang, Xuan,Yang, Huaiyu. Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2022,169(3):9.
APA	Yuan, Xuwen,Wang, Xuan,&Yang, Huaiyu.(2022).Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,169(3),9.
MLA	Yuan, Xuwen,et al."Effects of pH and Cl- Content on Degradation Process of Pre-Passivated Stainless Steels in an Alkaline Solution".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 169.3(2022):9.