Design and preparation of MoSi2/SiO2-Nb2O5/NbSi2 multilayer coating on Nb alloy: Microstructure and hot corrosion behavior

Zhao Wang; Yaming Wang; Shuqi Wang; Yongchun Zou; Guoliang Chen; Lei Wen; Guangxi Zhang; Lina Zhao; Jiahu Ouyang; Dechang Jia; Yu Zhou

doi:10.1016/j.corsci.2022.110733

Design and preparation of MoSi₂/SiO₂-Nb₂O₅/NbSi₂ multilayer coating on Nb alloy: Microstructure and hot corrosion behavior

Zhao Wang
, Yaming Wang^*
, Shuqi Wang
, Yongchun Zou
, Guoliang Chen
, Lei Wen
, Guangxi Zhang
, Lina Zhao
, Jiahu Ouyang
, Dechang Jia
, Yu Zhou

^*Corresponding author for this work

Harbin Institute of Technology
University of Science and Technology Beijing
Academy of Aerospace Propulsion Technology

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

23 Scopus citations

Abstract

A MoSi₂/SiO₂-Nb₂O₅/NbSi₂ multilayer coating was designed on Nb alloys using halide activated pack cementation (HAPC) and an innovative liquid plasma-assisted particle deposition and sintering (LPDS) method to improve its hot corrosion resistant. The weight gain of MoSi₂/SiO₂-Nb₂O₅/NbSi₂ coating was 3.204 mg/cm² after 200 h, which was 85.7% lower than that of NbSi₂/Nb₂O₅-SiO₂ coating, while the life of NbSi₂ coating was restricted only 100 h (20.539 mg/cm²) at 900 °C in Na₂SO₄ +NaCl salt. This improved performance is attributed to the prefabricated SiO₂-based barrier layer and MoSi₂ as a Si source to supplement the SiO₂ content, thus effectively alleviating the penetration of oxygen and molten salts.

Original language	English
Article number	110733
Journal	Corrosion Science
Volume	209
DOIs	https://doi.org/10.1016/j.corsci.2022.110733
State	Published - Dec 2022

Keywords

Hot corrosion
Liquid plasma-assisted particle deposition and sintering
MoSi
Nb alloys
Silicide coating

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10.1016/j.corsci.2022.110733

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title = "Design and preparation of MoSi2/SiO2-Nb2O5/NbSi2 multilayer coating on Nb alloy: Microstructure and hot corrosion behavior",

abstract = "A MoSi2/SiO2-Nb2O5/NbSi2 multilayer coating was designed on Nb alloys using halide activated pack cementation (HAPC) and an innovative liquid plasma-assisted particle deposition and sintering (LPDS) method to improve its hot corrosion resistant. The weight gain of MoSi2/SiO2-Nb2O5/NbSi2 coating was 3.204 mg/cm2 after 200 h, which was 85.7\% lower than that of NbSi2/Nb2O5-SiO2 coating, while the life of NbSi2 coating was restricted only 100 h (20.539 mg/cm2) at 900 °C in Na2SO4 +NaCl salt. This improved performance is attributed to the prefabricated SiO2-based barrier layer and MoSi2 as a Si source to supplement the SiO2 content, thus effectively alleviating the penetration of oxygen and molten salts.",

keywords = "Hot corrosion, Liquid plasma-assisted particle deposition and sintering, MoSi, Nb alloys, Silicide coating",

author = "Zhao Wang and Yaming Wang and Shuqi Wang and Yongchun Zou and Guoliang Chen and Lei Wen and Guangxi Zhang and Lina Zhao and Jiahu Ouyang and Dechang Jia and Yu Zhou",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = dec,

doi = "10.1016/j.corsci.2022.110733",

language = "英语",

volume = "209",

journal = "Corrosion Science",

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TY - JOUR

T1 - Design and preparation of MoSi2/SiO2-Nb2O5/NbSi2 multilayer coating on Nb alloy

T2 - Microstructure and hot corrosion behavior

AU - Wang, Zhao

AU - Wang, Yaming

AU - Wang, Shuqi

AU - Zou, Yongchun

AU - Chen, Guoliang

AU - Wen, Lei

AU - Zhang, Guangxi

AU - Zhao, Lina

AU - Ouyang, Jiahu

AU - Jia, Dechang

AU - Zhou, Yu

PY - 2022/12

Y1 - 2022/12

N2 - A MoSi2/SiO2-Nb2O5/NbSi2 multilayer coating was designed on Nb alloys using halide activated pack cementation (HAPC) and an innovative liquid plasma-assisted particle deposition and sintering (LPDS) method to improve its hot corrosion resistant. The weight gain of MoSi2/SiO2-Nb2O5/NbSi2 coating was 3.204 mg/cm2 after 200 h, which was 85.7% lower than that of NbSi2/Nb2O5-SiO2 coating, while the life of NbSi2 coating was restricted only 100 h (20.539 mg/cm2) at 900 °C in Na2SO4 +NaCl salt. This improved performance is attributed to the prefabricated SiO2-based barrier layer and MoSi2 as a Si source to supplement the SiO2 content, thus effectively alleviating the penetration of oxygen and molten salts.

AB - A MoSi2/SiO2-Nb2O5/NbSi2 multilayer coating was designed on Nb alloys using halide activated pack cementation (HAPC) and an innovative liquid plasma-assisted particle deposition and sintering (LPDS) method to improve its hot corrosion resistant. The weight gain of MoSi2/SiO2-Nb2O5/NbSi2 coating was 3.204 mg/cm2 after 200 h, which was 85.7% lower than that of NbSi2/Nb2O5-SiO2 coating, while the life of NbSi2 coating was restricted only 100 h (20.539 mg/cm2) at 900 °C in Na2SO4 +NaCl salt. This improved performance is attributed to the prefabricated SiO2-based barrier layer and MoSi2 as a Si source to supplement the SiO2 content, thus effectively alleviating the penetration of oxygen and molten salts.

KW - Hot corrosion

KW - Liquid plasma-assisted particle deposition and sintering

KW - MoSi

KW - Nb alloys

KW - Silicide coating

UR - https://www.scopus.com/pages/publications/85139874109

U2 - 10.1016/j.corsci.2022.110733

DO - 10.1016/j.corsci.2022.110733

M3 - 文章

AN - SCOPUS:85139874109

SN - 0010-938X

VL - 209

JO - Corrosion Science

JF - Corrosion Science

M1 - 110733

ER -

Design and preparation of MoSi₂/SiO₂-Nb₂O₅/NbSi₂ multilayer coating on Nb alloy: Microstructure and hot corrosion behavior

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Keywords

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