Y2O3 film as a diffusion barrier between MoSi2 coating and Nb-Si based alloy

Yanqiang Qiao; Xiao Zhang; Xiping Guo

doi:10.1016/j.corsci.2021.110044

Y₂O₃ film as a diffusion barrier between MoSi₂ coating and Nb-Si based alloy

Yanqiang Qiao, Xiao Zhang, Xiping Guo

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

17 Scopus citations

Abstract

A MoSi₂ coating with Y₂O₃ diffusion barrier was prepared on Nb-Si based alloy by electroplating of Y and then autoxidation of the Y film, followed by spark plasma sintering (SPS). With the addition of Y₂O₃ diffusion barrier, the outward diffusion of Nb, Ti and Cr was greatly suppressed and the inward consumption of Si element was reduced. After exposure of 500 h at 1250 °C, a dense SiO₂ scale with a thickness of 5.5–6.7 µm formed on the coating and its mass gain was about 0.9 mg·cm⁻².

Original language	English
Article number	110044
Journal	Corrosion Science
Volume	196
DOIs	https://doi.org/10.1016/j.corsci.2021.110044
State	Published - Mar 2022

Keywords

Diffusion barrier
Interdiffusion
MoSi coating
Oxidation

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title = "Y2O3 film as a diffusion barrier between MoSi2 coating and Nb-Si based alloy",

abstract = "A MoSi2 coating with Y2O3 diffusion barrier was prepared on Nb-Si based alloy by electroplating of Y and then autoxidation of the Y film, followed by spark plasma sintering (SPS). With the addition of Y2O3 diffusion barrier, the outward diffusion of Nb, Ti and Cr was greatly suppressed and the inward consumption of Si element was reduced. After exposure of 500 h at 1250 °C, a dense SiO2 scale with a thickness of 5.5–6.7 µm formed on the coating and its mass gain was about 0.9 mg·cm−2.",

keywords = "Diffusion barrier, Interdiffusion, MoSi coating, Oxidation",

author = "Yanqiang Qiao and Xiao Zhang and Xiping Guo",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.corsci.2021.110044",

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T1 - Y2O3 film as a diffusion barrier between MoSi2 coating and Nb-Si based alloy

AU - Qiao, Yanqiang

AU - Zhang, Xiao

AU - Guo, Xiping

PY - 2022/3

Y1 - 2022/3

N2 - A MoSi2 coating with Y2O3 diffusion barrier was prepared on Nb-Si based alloy by electroplating of Y and then autoxidation of the Y film, followed by spark plasma sintering (SPS). With the addition of Y2O3 diffusion barrier, the outward diffusion of Nb, Ti and Cr was greatly suppressed and the inward consumption of Si element was reduced. After exposure of 500 h at 1250 °C, a dense SiO2 scale with a thickness of 5.5–6.7 µm formed on the coating and its mass gain was about 0.9 mg·cm−2.

AB - A MoSi2 coating with Y2O3 diffusion barrier was prepared on Nb-Si based alloy by electroplating of Y and then autoxidation of the Y film, followed by spark plasma sintering (SPS). With the addition of Y2O3 diffusion barrier, the outward diffusion of Nb, Ti and Cr was greatly suppressed and the inward consumption of Si element was reduced. After exposure of 500 h at 1250 °C, a dense SiO2 scale with a thickness of 5.5–6.7 µm formed on the coating and its mass gain was about 0.9 mg·cm−2.

KW - Diffusion barrier

KW - Interdiffusion

KW - MoSi coating

KW - Oxidation

UR - http://www.scopus.com/inward/record.url?scp=85121850123&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2021.110044

DO - 10.1016/j.corsci.2021.110044

M3 - 文章

AN - SCOPUS:85121850123

SN - 0010-938X

VL - 196

JO - Corrosion Science

JF - Corrosion Science

M1 - 110044

ER -

Y₂O₃ film as a diffusion barrier between MoSi₂ coating and Nb-Si based alloy

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Keywords

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