Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films

Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films

Abstract In this work we report the hot corrosion properties of binary and ternary films of the Ta-Hf-C system in V2O5-Na2SO4 (50%wt.-50%wt.) molten salts at 700 °C deposited on AISI D3 steel substrates. Additionally, the mechanical and nanowear properties of the films were studied. The results show...

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Autores principales: Luis Yate, L. Emerson Coy, Willian Aperador
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
Medicine
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Science
Q
Acceso en línea:https://doaj.org/article/fa6b3f64611242f7a8a63f7a1d4a8752
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spelling oai:doaj.org-article:fa6b3f64611242f7a8a63f7a1d4a87522021-12-02T12:30:28ZRobust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films10.1038/s41598-017-03181-22045-2322https://doaj.org/article/fa6b3f64611242f7a8a63f7a1d4a87522017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03181-2https://doaj.org/toc/2045-2322Abstract In this work we report the hot corrosion properties of binary and ternary films of the Ta-Hf-C system in V2O5-Na2SO4 (50%wt.-50%wt.) molten salts at 700 °C deposited on AISI D3 steel substrates. Additionally, the mechanical and nanowear properties of the films were studied. The results show that the ternary alloys consist of solid solutions of the TaC and HfC binary carbides. The ternary alloy films have higher hardness and elastic recoveries, reaching 26.2 GPa and 87%, respectively, and lower nanowear when compared to the binary films. The corrosion rates of the ternary alloys have a superior behavior compared to the binary films, with corrosion rates as low as 0.058 μm/year. The combination and tunability of high hardness, elastic recovery, low nanowear and an excellent resistance to high temperature corrosion demonstrates the potential of the ternary Ta-Hf-C alloy films for applications in extreme conditions.Luis YateL. Emerson CoyWillian AperadorNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Luis Yate
L. Emerson Coy
Willian Aperador
Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films
description Abstract In this work we report the hot corrosion properties of binary and ternary films of the Ta-Hf-C system in V2O5-Na2SO4 (50%wt.-50%wt.) molten salts at 700 °C deposited on AISI D3 steel substrates. Additionally, the mechanical and nanowear properties of the films were studied. The results show that the ternary alloys consist of solid solutions of the TaC and HfC binary carbides. The ternary alloy films have higher hardness and elastic recoveries, reaching 26.2 GPa and 87%, respectively, and lower nanowear when compared to the binary films. The corrosion rates of the ternary alloys have a superior behavior compared to the binary films, with corrosion rates as low as 0.058 μm/year. The combination and tunability of high hardness, elastic recovery, low nanowear and an excellent resistance to high temperature corrosion demonstrates the potential of the ternary Ta-Hf-C alloy films for applications in extreme conditions.
format article
author Luis Yate
L. Emerson Coy
Willian Aperador
author_facet Luis Yate
L. Emerson Coy
Willian Aperador
author_sort Luis Yate
title Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films
title_short Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films
title_full Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films
title_fullStr Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films
title_full_unstemmed Robust tribo-mechanical and hot corrosion resistance of ultra-refractory Ta-Hf-C ternary alloy films
title_sort robust tribo-mechanical and hot corrosion resistance of ultra-refractory ta-hf-c ternary alloy films
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/fa6b3f64611242f7a8a63f7a1d4a8752
work_keys_str_mv AT luisyate robusttribomechanicalandhotcorrosionresistanceofultrarefractorytahfcternaryalloyfilms
AT lemersoncoy robusttribomechanicalandhotcorrosionresistanceofultrarefractorytahfcternaryalloyfilms
AT willianaperador robusttribomechanicalandhotcorrosionresistanceofultrarefractorytahfcternaryalloyfilms
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