Effects of Al/Si on the oxidation behavior of a TiZrV0.5Nb0.5 refractory high entropy alloy at 1000 ℃

Xuhui Pei; Yin Du; Hanming Wang; Tao Li; Mingchuan Hu; Haifeng Wang; Weimin Liu

doi:10.1016/j.corsci.2023.111527

Effects of Al/Si on the oxidation behavior of a TiZrV_0.5Nb_0.5 refractory high entropy alloy at 1000 ℃

Xuhui Pei
, Yin Du
, Hanming Wang
, Tao Li
, Mingchuan Hu
, Haifeng Wang
, Weimin Liu

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

Abstract

For the TiZrV_0.5Nb_0.5 RHEA as a model material, different mechanisms of Al and Si inhibiting its inherent catastrophic oxidation were systematically elucidated by analyzing the cross-section oxide layer and performing the XPS line scanning technology. Al/Si-alloying enhances oxidation resistance via improving the anti-spallation of oxide layer. A niobium oxide protective layer occurred on Si-containing alloy, accompanied by a pinning-effect of second-phase oxides and inhibition of oxide volatilization. Improvement oxidation resistance of TiZrV_0.5Nb_0.5Al_0.75 arises from a significant reduction in the oxygen inward diffusion and subsequent inhibition of oxide volatilization caused by the rapid diffusion and preferential oxidation of Al.

Original language	English
Article number	111527
Journal	Corrosion Science
Volume	224
DOIs	https://doi.org/10.1016/j.corsci.2023.111527
State	Published - Nov 2023

Keywords

Anti-spallation
Oxidation resistance
Refractory high entropy alloys
XPS line scanning

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10.1016/j.corsci.2023.111527

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title = "Effects of Al/Si on the oxidation behavior of a TiZrV0.5Nb0.5 refractory high entropy alloy at 1000 ℃",

abstract = "For the TiZrV0.5Nb0.5 RHEA as a model material, different mechanisms of Al and Si inhibiting its inherent catastrophic oxidation were systematically elucidated by analyzing the cross-section oxide layer and performing the XPS line scanning technology. Al/Si-alloying enhances oxidation resistance via improving the anti-spallation of oxide layer. A niobium oxide protective layer occurred on Si-containing alloy, accompanied by a pinning-effect of second-phase oxides and inhibition of oxide volatilization. Improvement oxidation resistance of TiZrV0.5Nb0.5Al0.75 arises from a significant reduction in the oxygen inward diffusion and subsequent inhibition of oxide volatilization caused by the rapid diffusion and preferential oxidation of Al.",

keywords = "Anti-spallation, Oxidation resistance, Refractory high entropy alloys, XPS line scanning",

author = "Xuhui Pei and Yin Du and Hanming Wang and Tao Li and Mingchuan Hu and Haifeng Wang and Weimin Liu",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = nov,

doi = "10.1016/j.corsci.2023.111527",

language = "英语",

volume = "224",

journal = "Corrosion Science",

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TY - JOUR

T1 - Effects of Al/Si on the oxidation behavior of a TiZrV0.5Nb0.5 refractory high entropy alloy at 1000 ℃

AU - Pei, Xuhui

AU - Du, Yin

AU - Wang, Hanming

AU - Li, Tao

AU - Hu, Mingchuan

AU - Wang, Haifeng

AU - Liu, Weimin

PY - 2023/11

Y1 - 2023/11

N2 - For the TiZrV0.5Nb0.5 RHEA as a model material, different mechanisms of Al and Si inhibiting its inherent catastrophic oxidation were systematically elucidated by analyzing the cross-section oxide layer and performing the XPS line scanning technology. Al/Si-alloying enhances oxidation resistance via improving the anti-spallation of oxide layer. A niobium oxide protective layer occurred on Si-containing alloy, accompanied by a pinning-effect of second-phase oxides and inhibition of oxide volatilization. Improvement oxidation resistance of TiZrV0.5Nb0.5Al0.75 arises from a significant reduction in the oxygen inward diffusion and subsequent inhibition of oxide volatilization caused by the rapid diffusion and preferential oxidation of Al.

AB - For the TiZrV0.5Nb0.5 RHEA as a model material, different mechanisms of Al and Si inhibiting its inherent catastrophic oxidation were systematically elucidated by analyzing the cross-section oxide layer and performing the XPS line scanning technology. Al/Si-alloying enhances oxidation resistance via improving the anti-spallation of oxide layer. A niobium oxide protective layer occurred on Si-containing alloy, accompanied by a pinning-effect of second-phase oxides and inhibition of oxide volatilization. Improvement oxidation resistance of TiZrV0.5Nb0.5Al0.75 arises from a significant reduction in the oxygen inward diffusion and subsequent inhibition of oxide volatilization caused by the rapid diffusion and preferential oxidation of Al.

KW - Anti-spallation

KW - Oxidation resistance

KW - Refractory high entropy alloys

KW - XPS line scanning

UR - https://www.scopus.com/pages/publications/85171742869

U2 - 10.1016/j.corsci.2023.111527

DO - 10.1016/j.corsci.2023.111527

M3 - 文章

AN - SCOPUS:85171742869

SN - 0010-938X

VL - 224

JO - Corrosion Science

JF - Corrosion Science

M1 - 111527

ER -

Effects of Al/Si on the oxidation behavior of a TiZrV_0.5Nb_0.5 refractory high entropy alloy at 1000 ℃

Abstract

Keywords

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