Untypical Electrochemical Corrosion Behavior of High-Nitrogen Austenitic Stainless Steel: Non-Pitting in Transpassivation

doi:10.1007/s40195-024-01743-8

IMR OpenIR

	Untypical Electrochemical Corrosion Behavior of High-Nitrogen Austenitic Stainless Steel: Non-Pitting in Transpassivation
	Wang, Qisi 1,2; Wang, Qingchuan 1; Wang, Xingxing 3; Liu, Fan 1,2; Yang, Ke 1
通讯作者	Wang, Qingchuan(qcwang11s@imr.ac.cn) ; Yang, Ke(kyang@imr.ac.cn)
	2024-07-04
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	8
摘要	The transpassivation and pitting corrosion behavior of a high-nitrogen stainless steel (HNS), Fe18Cr15Mn3Mo0.92N, were systematically investigated by electrochemical analysis, morphology observation, and X-ray photoelectron spectroscopy surface analysis. It was surprisingly found that no pitting corrosion occurred in the transpassivation region of HNS. This electrochemical corrosion behavior is untypical for stainless steels, i.e., the traditional critical pitting potential method was invalid for HNS. Both N and Cr enrichments in the transpassivation film on HNS were found extremely higher than those in the passivation film. The N existed in the form of [CrN] complex, which could stabilize the above both films. Besides, the corrosion product of N was detected as NH3 that exhibited an effective corrosion inhibition effect. On this basis, although the transition of Cr from 3-valent to 6-valent was confirmed, the transpassivation film on HNS still maintained it high stability and no pitting was found to occur. Therefore, the real pitting resistance of HNS should be higher than the expected before. And the stable transpassivation film played an important role in its untypical pitting corrosion resistance.
关键词	High nitrogen Stainless steel Passivation Transpassivation Pitting corrosion
资助者	National Natural Science Foundation of China
DOI	10.1007/s40195-024-01743-8
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51801220]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001262528300002
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：2[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/321006/187983
专题	中国科学院金属研究所
通讯作者	Wang, Qingchuan; Yang, Ke
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.North China Univ Water Resources & Elect Power, Henan Int Joint Lab High Efficiency Special Green, Zhengzhou 450045, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qisi,Wang, Qingchuan,Wang, Xingxing,et al. Untypical Electrochemical Corrosion Behavior of High-Nitrogen Austenitic Stainless Steel: Non-Pitting in Transpassivation[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:8.
APA	Wang, Qisi,Wang, Qingchuan,Wang, Xingxing,Liu, Fan,&Yang, Ke.(2024).Untypical Electrochemical Corrosion Behavior of High-Nitrogen Austenitic Stainless Steel: Non-Pitting in Transpassivation.ACTA METALLURGICA SINICA-ENGLISH LETTERS,8.
MLA	Wang, Qisi,et al."Untypical Electrochemical Corrosion Behavior of High-Nitrogen Austenitic Stainless Steel: Non-Pitting in Transpassivation".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):8.