Enhanced corrosion resistance by engineering crystallography on metals

doi:10.1038/s41467-022-28368-8

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	Enhanced corrosion resistance by engineering crystallography on metals
	Wei, X. X.3,4; Zhang, B.3; Wu, B.1; Wang, Y. J.3; Tian, X. H.3,4; Yang, L. X.3; Oguzie, E. E.2; Ma, X. L.3,5
刊名	NATURE COMMUNICATIONS
	2022-02-07
卷号	13 期号:1
DOI	10.1038/s41467-022-28368-8
英文摘要	Passive films on metal surfaces provide better corrosion resistance, but they can degrade in long-term service. Here the authors demonstrate a strategy to engineer crystallographic configuration at the metal/film interface to further improve corrosion resistance. Nanometer-thick passive films, which impart superior corrosion resistance to metals, are degraded in long-term service; they are also susceptible to chloride-induced localized attack. Here we show, by engineering crystallographic configurations upon metal matrices adjacent to their passive films, we obtain great enhancement of corrosion resistance of FeCr15Ni15 single crystal in sulphuric acid, with activation time up to two orders of magnitude longer than that of the non-engineered counterparts. Meanwhile, engineering crystallography decreases the passive current density and shifts the pitting potential to noble values. Applying anodic polarizations under a transpassivation potential, we make the metal matrices underneath the transpassive films highly uneven with {111}-terminated configurations, which is responsible for the enhancement of corrosion resistance. The transpassivation strategy also works in the commercial stainless steels where both grain interior and grain boundaries are rebuilt into the low-energy configurations. Our results demonstrate a technological implication in the pretreatment process of anti-corrosion engineering.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000752524300004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154799]
专题	兰州理工大学
作者单位	1.Bay Area Ctr Electron Microscopy, Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China; 2.Fed Univ Technol Owerri, Africa Ctr Excellence Future Energies & Electroch, PMB 1526, Owerri, Imo State, Nigeria; 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China; 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China; 5.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Wei, X. X.,Zhang, B.,Wu, B.,et al. Enhanced corrosion resistance by engineering crystallography on metals[J]. NATURE COMMUNICATIONS,2022,13(1).
APA	Wei, X. X..,Zhang, B..,Wu, B..,Wang, Y. J..,Tian, X. H..,...&Ma, X. L..(2022).Enhanced corrosion resistance by engineering crystallography on metals.NATURE COMMUNICATIONS,13(1).
MLA	Wei, X. X.,et al."Enhanced corrosion resistance by engineering crystallography on metals".NATURE COMMUNICATIONS 13.1(2022).