Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi                         2                         /ReSi                         2                         /NbSi                         2                          compound coating prepared by electrodeposition and then pack cementation

Gao Yue; Xiping Guo; Yanqiang Qiao

doi:10.1016/j.ceramint.2019.03.050

Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating prepared by electrodeposition and then pack cementation

Gao Yue, Xiping Guo, Yanqiang Qiao

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

19 Scopus citations

Abstract

Mo[sbnd]Re duplex film has been electrodeposited from aqueous solution innovatively and then applied to fabricate protective silicide coating for the Nb[sbnd]Ti[sbnd]Si based alloy successively. The XRD, SEM and EDS results indicated the formation of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating after halide reactivated pack cementation (HAPC) treatment. Pesting oxidation of MoSi ₂ layer was suppressed and the Nb[sbnd]Ti[sbnd]Si based alloy was effectively protected at 800 °C with a mass gain of 0.48 mg cm ⁻² after oxidation for 100 h. At 1250 °C, continuous mass gain was observed with a mass gain of 2.6 mg cm ⁻² after exposure of 10 h. The synergistic combination of MoSi ₂ and NbSi ₂ layer enabled admirable protection of the substrate, in which MoSi ₂ layer worked as the major anti-oxidation coating and the NbSi ₂ layer could be a reservoir for Si. The contrast experiments indicate that ReSi ₂ layer could improve the integrity and adherence of MoSi ₂ layer, reduce the outward diffusion of alloying elements and oxidation of NbSi ₂ layer, and then improve oxidation resistance of the compound coating ultimately.

Original language	English
Pages (from-to)	11739-11748
Number of pages	10
Journal	Ceramics International
Volume	45
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2019.03.050
State	Published - 15 Jun 2019

Keywords

Electrodeposition
Intermetallic
Oxidation
Silicide coating

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Yue, G., Guo, X., & Qiao, Y. (2019). Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating prepared by electrodeposition and then pack cementation Ceramics International, 45(9), 11739-11748. https://doi.org/10.1016/j.ceramint.2019.03.050

Yue, Gao ; Guo, Xiping ; Qiao, Yanqiang. / Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating prepared by electrodeposition and then pack cementation In: Ceramics International. 2019 ; Vol. 45, No. 9. pp. 11739-11748.

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title = " Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi 2 /ReSi 2 /NbSi 2 compound coating prepared by electrodeposition and then pack cementation ",

abstract = " Mo[sbnd]Re duplex film has been electrodeposited from aqueous solution innovatively and then applied to fabricate protective silicide coating for the Nb[sbnd]Ti[sbnd]Si based alloy successively. The XRD, SEM and EDS results indicated the formation of MoSi 2 /ReSi 2 /NbSi 2 compound coating after halide reactivated pack cementation (HAPC) treatment. Pesting oxidation of MoSi 2 layer was suppressed and the Nb[sbnd]Ti[sbnd]Si based alloy was effectively protected at 800 °C with a mass gain of 0.48 mg cm −2 after oxidation for 100 h. At 1250 °C, continuous mass gain was observed with a mass gain of 2.6 mg cm −2 after exposure of 10 h. The synergistic combination of MoSi 2 and NbSi 2 layer enabled admirable protection of the substrate, in which MoSi 2 layer worked as the major anti-oxidation coating and the NbSi 2 layer could be a reservoir for Si. The contrast experiments indicate that ReSi 2 layer could improve the integrity and adherence of MoSi 2 layer, reduce the outward diffusion of alloying elements and oxidation of NbSi 2 layer, and then improve oxidation resistance of the compound coating ultimately.",

keywords = "Electrodeposition, Intermetallic, Oxidation, Silicide coating",

author = "Gao Yue and Xiping Guo and Yanqiang Qiao",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

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doi = "10.1016/j.ceramint.2019.03.050",

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Yue, G, Guo, X & Qiao, Y 2019, ' Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating prepared by electrodeposition and then pack cementation ', Ceramics International, vol. 45, no. 9, pp. 11739-11748. https://doi.org/10.1016/j.ceramint.2019.03.050

Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating prepared by electrodeposition and then pack cementation . / Yue, Gao; Guo, Xiping; Qiao, Yanqiang.
In: Ceramics International, Vol. 45, No. 9, 15.06.2019, p. 11739-11748.

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

TY - JOUR

T1 - Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi 2 /ReSi 2 /NbSi 2 compound coating prepared by electrodeposition and then pack cementation

AU - Yue, Gao

AU - Guo, Xiping

AU - Qiao, Yanqiang

PY - 2019/6/15

Y1 - 2019/6/15

N2 - Mo[sbnd]Re duplex film has been electrodeposited from aqueous solution innovatively and then applied to fabricate protective silicide coating for the Nb[sbnd]Ti[sbnd]Si based alloy successively. The XRD, SEM and EDS results indicated the formation of MoSi 2 /ReSi 2 /NbSi 2 compound coating after halide reactivated pack cementation (HAPC) treatment. Pesting oxidation of MoSi 2 layer was suppressed and the Nb[sbnd]Ti[sbnd]Si based alloy was effectively protected at 800 °C with a mass gain of 0.48 mg cm −2 after oxidation for 100 h. At 1250 °C, continuous mass gain was observed with a mass gain of 2.6 mg cm −2 after exposure of 10 h. The synergistic combination of MoSi 2 and NbSi 2 layer enabled admirable protection of the substrate, in which MoSi 2 layer worked as the major anti-oxidation coating and the NbSi 2 layer could be a reservoir for Si. The contrast experiments indicate that ReSi 2 layer could improve the integrity and adherence of MoSi 2 layer, reduce the outward diffusion of alloying elements and oxidation of NbSi 2 layer, and then improve oxidation resistance of the compound coating ultimately.

AB - Mo[sbnd]Re duplex film has been electrodeposited from aqueous solution innovatively and then applied to fabricate protective silicide coating for the Nb[sbnd]Ti[sbnd]Si based alloy successively. The XRD, SEM and EDS results indicated the formation of MoSi 2 /ReSi 2 /NbSi 2 compound coating after halide reactivated pack cementation (HAPC) treatment. Pesting oxidation of MoSi 2 layer was suppressed and the Nb[sbnd]Ti[sbnd]Si based alloy was effectively protected at 800 °C with a mass gain of 0.48 mg cm −2 after oxidation for 100 h. At 1250 °C, continuous mass gain was observed with a mass gain of 2.6 mg cm −2 after exposure of 10 h. The synergistic combination of MoSi 2 and NbSi 2 layer enabled admirable protection of the substrate, in which MoSi 2 layer worked as the major anti-oxidation coating and the NbSi 2 layer could be a reservoir for Si. The contrast experiments indicate that ReSi 2 layer could improve the integrity and adherence of MoSi 2 layer, reduce the outward diffusion of alloying elements and oxidation of NbSi 2 layer, and then improve oxidation resistance of the compound coating ultimately.

KW - Electrodeposition

KW - Intermetallic

KW - Oxidation

KW - Silicide coating

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DO - 10.1016/j.ceramint.2019.03.050

M3 - 文章

AN - SCOPUS:85062948980

SN - 0272-8842

VL - 45

SP - 11739

EP - 11748

JO - Ceramics International

JF - Ceramics International

IS - 9

ER -

Yue G, Guo X, Qiao Y. Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating prepared by electrodeposition and then pack cementation Ceramics International. 2019 Jun 15;45(9):11739-11748. doi: 10.1016/j.ceramint.2019.03.050

Microstructure and oxidation behaviors at 800°C and 1250°C of MoSi ₂ /ReSi ₂ /NbSi ₂ compound coating prepared by electrodeposition and then pack cementation

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