Enhanced corrosion resistance by engineering crystallography on metals

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...

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Autores principales: Wei, X. X., Zhang, B., Wu, B., Wang, Y. J., Tian, X. H., Yang, L. X., Oguzie, E. E., Ma, X. L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8821614/
https://www.ncbi.nlm.nih.gov/pubmed/35132071
http://dx.doi.org/10.1038/s41467-022-28368-8
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author Wei, X. X.
Zhang, B.
Wu, B.
Wang, Y. J.
Tian, X. H.
Yang, L. X.
Oguzie, E. E.
Ma, X. L.
author_facet Wei, X. X.
Zhang, B.
Wu, B.
Wang, Y. J.
Tian, X. H.
Yang, L. X.
Oguzie, E. E.
Ma, X. L.
author_sort Wei, X. X.
collection PubMed
description 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.
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spelling pubmed-88216142022-02-18 Enhanced corrosion resistance by engineering crystallography on metals Wei, X. X. Zhang, B. Wu, B. Wang, Y. J. Tian, X. H. Yang, L. X. Oguzie, E. E. Ma, X. L. Nat Commun Article 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. Nature Publishing Group UK 2022-02-07 /pmc/articles/PMC8821614/ /pubmed/35132071 http://dx.doi.org/10.1038/s41467-022-28368-8 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Wei, X. X.
Zhang, B.
Wu, B.
Wang, Y. J.
Tian, X. H.
Yang, L. X.
Oguzie, E. E.
Ma, X. L.
Enhanced corrosion resistance by engineering crystallography on metals
title Enhanced corrosion resistance by engineering crystallography on metals
title_full Enhanced corrosion resistance by engineering crystallography on metals
title_fullStr Enhanced corrosion resistance by engineering crystallography on metals
title_full_unstemmed Enhanced corrosion resistance by engineering crystallography on metals
title_short Enhanced corrosion resistance by engineering crystallography on metals
title_sort enhanced corrosion resistance by engineering crystallography on metals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8821614/
https://www.ncbi.nlm.nih.gov/pubmed/35132071
http://dx.doi.org/10.1038/s41467-022-28368-8
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