Unmasking chloride attack on the passive film of metals

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dc.contributor.authorZhang, B.
dc.contributor.authorWang, J.
dc.contributor.authorWu, B.
dc.contributor.authorGuo, X. W.,
dc.contributor.authorWang, Y. J.
dc.contributor.authorChen, D.
dc.contributor.authorZhang, Y. C.
dc.contributor.authorDu, K
dc.contributor.authorOguzie, E. E.
dc.contributor.authorMa, X. L.
dc.date.accessioned2024-10-28T12:33:23Z
dc.date.available2024-10-28T12:33:23Z
dc.date.issued2018-07-02
dc.descriptionThe research was conducted in collaboration with a staff of this university
dc.description.abstractNanometer-thick passive films on metals usually impart remarkable resistance to general corrosion but are susceptible to localized attack in certain aggressive media, leading to material failure with pronounced adverse economic and safety consequences. Over the past decades, several classic theories have been proposed and accepted, based on hypotheses and theoretical models, and oftentimes, not sufficiently nor directly corroborated by experimental evidence. Here we show experimental results on the structure of the passive film formed on a FeCr15Ni15 single crystal in chloride-free and chloride-containing media. We use aberration-corrected transmission electron microscopy to directly capture the chloride ion accumulation at the metal/film interface, lattice expansion on the metal side, undulations at the interface, and structural inhomogeneity on the film side, most of which had previously been rejected by existing models. This work unmasks, at the atomic scale, the mechanism of chloride-induced passivity breakdown that is known to occur in various metallic materials
dc.description.sponsorshipNational Natural Science Foundation of China (Nos. 51771212, 11327901, 51390473), the Key Research Program of Frontier Sciences CAS (QYZDJ-SSW-JSC010), the Innovation Fund in IMR (2017-ZD05)
dc.identifier.citationZhang, B., Wang, J., Wu, B., Guo, X. W., Wang, Y. J., Chen, D., Zhang, Y. C., Du, K., Oguzie, E. E. & Ma, X. L. (2018). Unmasking chloride attack on the passive film of metals. Nature Communications 9, 2559, 1 - 9
dc.identifier.doihttps://doi.org/10.1038/s41467-018-04942-x
dc.identifier.urihttps://repository.futo.edu.ng/handle/20.500.14562/1411
dc.language.isoen
dc.publisherSpringer Nature
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectCorrosion
dc.subjectmetals and alloys
dc.subjectmicroscopy
dc.subjectShenyang National Laboratory for Materials Science
dc.titleUnmasking chloride attack on the passive film of metals
dc.typeArticle

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