Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering

(Re(0.67)Al(0.10))B(2) and (Re(0.74)Al(0.11))B(2) solid solution as well as Re(0.85)B(2) thin films were deposited by hybrid RF-DC magnetron sputtering. X-ray diffraction (XRD) showed that all films exhibit the ReB(2) (P6(3)/mmc) crystal structure. X-ray photoelectron spectroscopy (XPS) analyses per...

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Autores principales: Bliem, Pascal, Mráz, Stanislav, Sen, Sandipan, Hunold, Oliver, Schneider, Jochen M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6197250/
https://www.ncbi.nlm.nih.gov/pubmed/30349134
http://dx.doi.org/10.1038/s41598-018-34042-1
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author Bliem, Pascal
Mráz, Stanislav
Sen, Sandipan
Hunold, Oliver
Schneider, Jochen M.
author_facet Bliem, Pascal
Mráz, Stanislav
Sen, Sandipan
Hunold, Oliver
Schneider, Jochen M.
author_sort Bliem, Pascal
collection PubMed
description (Re(0.67)Al(0.10))B(2) and (Re(0.74)Al(0.11))B(2) solid solution as well as Re(0.85)B(2) thin films were deposited by hybrid RF-DC magnetron sputtering. X-ray diffraction (XRD) showed that all films exhibit the ReB(2) (P6(3)/mmc) crystal structure. X-ray photoelectron spectroscopy (XPS) analyses performed on atmosphere exposed thin film surfaces suggest that ReB(2) corrodes, consistent with literature, by forming perrhenic acid (HReO(4)) already after two days, while (Re(0.74)Al(0.11))B(2) forms a self-passivating Al-oxide layer preventing corrosion in a time period ≥ 60 days. Hence, it is evident that Al additions to ReB(2) significantly increase the chemical stability during atmosphere exposure.
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spelling pubmed-61972502018-10-24 Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering Bliem, Pascal Mráz, Stanislav Sen, Sandipan Hunold, Oliver Schneider, Jochen M. Sci Rep Article (Re(0.67)Al(0.10))B(2) and (Re(0.74)Al(0.11))B(2) solid solution as well as Re(0.85)B(2) thin films were deposited by hybrid RF-DC magnetron sputtering. X-ray diffraction (XRD) showed that all films exhibit the ReB(2) (P6(3)/mmc) crystal structure. X-ray photoelectron spectroscopy (XPS) analyses performed on atmosphere exposed thin film surfaces suggest that ReB(2) corrodes, consistent with literature, by forming perrhenic acid (HReO(4)) already after two days, while (Re(0.74)Al(0.11))B(2) forms a self-passivating Al-oxide layer preventing corrosion in a time period ≥ 60 days. Hence, it is evident that Al additions to ReB(2) significantly increase the chemical stability during atmosphere exposure. Nature Publishing Group UK 2018-10-22 /pmc/articles/PMC6197250/ /pubmed/30349134 http://dx.doi.org/10.1038/s41598-018-34042-1 Text en © The Author(s) 2018 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/.
spellingShingle Article
Bliem, Pascal
Mráz, Stanislav
Sen, Sandipan
Hunold, Oliver
Schneider, Jochen M.
Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering
title Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering
title_full Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering
title_fullStr Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering
title_full_unstemmed Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering
title_short Self-passivating (Re,Al)B(2) coatings synthesized by magnetron sputtering
title_sort self-passivating (re,al)b(2) coatings synthesized by magnetron sputtering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6197250/
https://www.ncbi.nlm.nih.gov/pubmed/30349134
http://dx.doi.org/10.1038/s41598-018-34042-1
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