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...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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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. |
format | Online Article Text |
id | pubmed-8821614 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
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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