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

School of Materials Sience and Engineering

Technische Universität Darmstadt
Northwestern Polytechnical University Xian
Xi'an Jiaotong University

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

32 Scopus citations

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.

Original language	English
Pages (from-to)	1111-1118
Number of pages	8
Journal	Applied Surface Science
Volume	439
DOIs	https://doi.org/10.1016/j.apsusc.2018.01.114
State	Published - 1 May 2018

Keywords

Coatings
Diffusion
Molybdenum silicide
Oxidation resistance

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10.1016/j.apsusc.2018.01.114

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title = "A long-term ultrahigh temperature application of layered silicide coated Nb alloy in air",

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",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

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

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volume = "439",

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journal = "Applied Surface Science",

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TY - JOUR

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

UR - https://www.scopus.com/pages/publications/85041378552

U2 - 10.1016/j.apsusc.2018.01.114

DO - 10.1016/j.apsusc.2018.01.114

M3 - 文章

AN - SCOPUS:85041378552

SN - 0169-4332

VL - 439

SP - 1111

EP - 1118

JO - Applied Surface Science

JF - Applied Surface Science

ER -

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

Abstract

Keywords

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