A long-term ultrahigh temperature application of layered silicide coated Nb alloy in air

Jia Sun; Qian Gang Fu; Tao Li; Chen Wang; Cai Xia Huo; Hong Zhou; Guan Jun Yang; Le Sun

doi:10.1016/j.apsusc.2018.01.114

A long-term ultrahigh temperature application of layered silicide coated Nb alloy in air

Jia Sun, Qian Gang Fu, Tao Li, Chen Wang, Cai Xia Huo, Hong Zhou, Guan Jun Yang, Le Sun

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

27 引用（Scopus）

摘要

Nb-based alloy possessed limited application service life at ultrahigh temperature (>1400 °C) in air even taking the effective protective coating strategy into consideration for last decades. In this work a long duration of above 128 h at 1500 °C in air was successfully achieved on Nb-based alloy thanked to multi-layered silicide coating. Through optimizing interfaces, the MoSi ₂ /NbSi ₂ silicide coating with Al ₂ O ₃ -adsorbed-particles layer exhibited three-times higher of oxidation resistance capacity than the one without it. In MoSi ₂ -Al ₂ O ₃ -NbSi ₂ multilayer coating, the Al ₂ O ₃ -adsorbed-particles layer playing as an element-diffusion barrier role, as well as the formed porous Nb ₅ Si ₃ layer as a stress transition zone, contributed to the significant improvement.

源语言	英语
页（从-至）	1111-1118
页数	8
期刊	Applied Surface Science
卷	439
DOI	https://doi.org/10.1016/j.apsusc.2018.01.114
出版状态	已出版 - 1 5月 2018

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abstract = " Nb-based alloy possessed limited application service life at ultrahigh temperature (>1400 °C) in air even taking the effective protective coating strategy into consideration for last decades. In this work a long duration of above 128 h at 1500 °C in air was successfully achieved on Nb-based alloy thanked to multi-layered silicide coating. Through optimizing interfaces, the MoSi 2 /NbSi 2 silicide coating with Al 2 O 3 -adsorbed-particles layer exhibited three-times higher of oxidation resistance capacity than the one without it. In MoSi 2 -Al 2 O 3 -NbSi 2 multilayer coating, the Al 2 O 3 -adsorbed-particles layer playing as an element-diffusion barrier role, as well as the formed porous Nb 5 Si 3 layer as a stress transition zone, contributed to the significant improvement.",

keywords = "Coatings, Diffusion, Molybdenum silicide, Oxidation resistance",

author = "Jia Sun and Fu, {Qian Gang} and Tao Li and Chen Wang and Huo, {Cai Xia} and Hong Zhou and Yang, {Guan Jun} and Le Sun",

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doi = "10.1016/j.apsusc.2018.01.114",

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T1 - A long-term ultrahigh temperature application of layered silicide coated Nb alloy in air

AU - Sun, Jia

AU - Fu, Qian Gang

AU - Li, Tao

AU - Wang, Chen

AU - Huo, Cai Xia

AU - Zhou, Hong

AU - Yang, Guan Jun

AU - Sun, Le

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Nb-based alloy possessed limited application service life at ultrahigh temperature (>1400 °C) in air even taking the effective protective coating strategy into consideration for last decades. In this work a long duration of above 128 h at 1500 °C in air was successfully achieved on Nb-based alloy thanked to multi-layered silicide coating. Through optimizing interfaces, the MoSi 2 /NbSi 2 silicide coating with Al 2 O 3 -adsorbed-particles layer exhibited three-times higher of oxidation resistance capacity than the one without it. In MoSi 2 -Al 2 O 3 -NbSi 2 multilayer coating, the Al 2 O 3 -adsorbed-particles layer playing as an element-diffusion barrier role, as well as the formed porous Nb 5 Si 3 layer as a stress transition zone, contributed to the significant improvement.

AB - Nb-based alloy possessed limited application service life at ultrahigh temperature (>1400 °C) in air even taking the effective protective coating strategy into consideration for last decades. In this work a long duration of above 128 h at 1500 °C in air was successfully achieved on Nb-based alloy thanked to multi-layered silicide coating. Through optimizing interfaces, the MoSi 2 /NbSi 2 silicide coating with Al 2 O 3 -adsorbed-particles layer exhibited three-times higher of oxidation resistance capacity than the one without it. In MoSi 2 -Al 2 O 3 -NbSi 2 multilayer coating, the Al 2 O 3 -adsorbed-particles layer playing as an element-diffusion barrier role, as well as the formed porous Nb 5 Si 3 layer as a stress transition zone, contributed to the significant improvement.

KW - Coatings

KW - Diffusion

KW - Molybdenum silicide

KW - Oxidation resistance

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VL - 439

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JO - Applied Surface Science

JF - Applied Surface Science

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A long-term ultrahigh temperature application of layered silicide coated Nb alloy in air

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