Atomic-scale decoration for improving the pitting corrosion resistance of austenitic stainless steels

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	Atomic-scale decoration for improving the pitting corrosion resistance of austenitic stainless steels
	Y. T. Zhou; B. Zhang; S. J. Zheng; J. Wang; X. Y. San; X. L. Ma
	2014
发表期刊	Scientific Reports
ISSN	2045-2322
卷号	4
摘要	Stainless steels are susceptible to the localized pitting corrosion that leads to a huge loss to our society. Studies in the past decades confirmed that the pitting events generally originate from the local dissolution in MnS inclusions which are more or less ubiquitous in stainless steels. Although a recent study indicated that endogenous MnCr2O4 nano-octahedra within the MnS medium give rise to local nano-galvanic cells which are responsible for the preferential dissolution of MnS, effective solutions of restraining the cells from viewpoint of electrochemistry are being tantalizingly searched. Here we report such a galvanic corrosion can be greatly resisted via bathing the steels in Cu2(+)-containing solutions. This chemical bath generates Cu2-delta S layers on the surfaces of MnS inclusions, invalidating the nano-galvanic cells. Our study provides a low-cost approach via an atomic scale decoration to improve the pitting corrosion resistance of stainless steels in a volume-treated manner.
部门归属	[zhou, y. t. ; zhang, b. ; zheng, s. j. ; wang, j. ; san, x. y. ; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; ma, xl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china. ; xlma@imr.ac.cn
关键词	Sulfide Inclusions Cation-exchange Pit Initiation Nitric-acid Microscopy Mechanism
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72328
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. T. Zhou,B. Zhang,S. J. Zheng,et al. Atomic-scale decoration for improving the pitting corrosion resistance of austenitic stainless steels[J]. Scientific Reports,2014,4.
APA	Y. T. Zhou,B. Zhang,S. J. Zheng,J. Wang,X. Y. San,&X. L. Ma.(2014).Atomic-scale decoration for improving the pitting corrosion resistance of austenitic stainless steels.Scientific Reports,4.
MLA	Y. T. Zhou,et al."Atomic-scale decoration for improving the pitting corrosion resistance of austenitic stainless steels".Scientific Reports 4(2014).