Microstructure and oxidation resistance of Ti modified Si-Mo coating on Nb-Si based ultrahigh temperature alloy

Longfei Li; Xiping Guo

doi:10.1016/j.corsci.2023.111293

Microstructure and oxidation resistance of Ti modified Si-Mo coating on Nb-Si based ultrahigh temperature alloy

Longfei Li, Xiping Guo

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

18 引用（Scopus）

摘要

Ti modified Si-Mo coatings have been successfully prepared on Nb-Si based ultrahigh temperature alloy by slurry sintering method. The results show that the addition of Ti as well as its content has an obvious influence on the density, grain size and oxidation resistance of the coatings. The 5 at% Ti modified coating possesses the best oxidation protection performance with a multi-layered structure consisting of a C11_b MoSi₂/C40 (Mo,Ti)Si₂ outer layer and a dense (Ti,Nb)₅Si₄/(Nb,X)₅Si₃ inner layer. After oxidation, the formation of SiO₂ and TiO₂ can quickly seal the holes in the coating and form a dense SiO₂/TiO₂ scale.

源语言	英语
文章编号	111293
期刊	Corrosion Science
卷	220
DOI	https://doi.org/10.1016/j.corsci.2023.111293
出版状态	已出版 - 1 8月 2023

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title = "Microstructure and oxidation resistance of Ti modified Si-Mo coating on Nb-Si based ultrahigh temperature alloy",

abstract = "Ti modified Si-Mo coatings have been successfully prepared on Nb-Si based ultrahigh temperature alloy by slurry sintering method. The results show that the addition of Ti as well as its content has an obvious influence on the density, grain size and oxidation resistance of the coatings. The 5 at% Ti modified coating possesses the best oxidation protection performance with a multi-layered structure consisting of a C11b MoSi2/C40 (Mo,Ti)Si2 outer layer and a dense (Ti,Nb)5Si4/(Nb,X)5Si3 inner layer. After oxidation, the formation of SiO2 and TiO2 can quickly seal the holes in the coating and form a dense SiO2/TiO2 scale.",

keywords = "C11 MoSi, C40 (Mo,Ti)Si, Nb-Si based ultrahigh temperature alloy, Oxidation behavior, Slurry sintering",

author = "Longfei Li and Xiping Guo",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = aug,

day = "1",

doi = "10.1016/j.corsci.2023.111293",

language = "英语",

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journal = "Corrosion Science",

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TY - JOUR

T1 - Microstructure and oxidation resistance of Ti modified Si-Mo coating on Nb-Si based ultrahigh temperature alloy

AU - Li, Longfei

AU - Guo, Xiping

PY - 2023/8/1

Y1 - 2023/8/1

N2 - Ti modified Si-Mo coatings have been successfully prepared on Nb-Si based ultrahigh temperature alloy by slurry sintering method. The results show that the addition of Ti as well as its content has an obvious influence on the density, grain size and oxidation resistance of the coatings. The 5 at% Ti modified coating possesses the best oxidation protection performance with a multi-layered structure consisting of a C11b MoSi2/C40 (Mo,Ti)Si2 outer layer and a dense (Ti,Nb)5Si4/(Nb,X)5Si3 inner layer. After oxidation, the formation of SiO2 and TiO2 can quickly seal the holes in the coating and form a dense SiO2/TiO2 scale.

AB - Ti modified Si-Mo coatings have been successfully prepared on Nb-Si based ultrahigh temperature alloy by slurry sintering method. The results show that the addition of Ti as well as its content has an obvious influence on the density, grain size and oxidation resistance of the coatings. The 5 at% Ti modified coating possesses the best oxidation protection performance with a multi-layered structure consisting of a C11b MoSi2/C40 (Mo,Ti)Si2 outer layer and a dense (Ti,Nb)5Si4/(Nb,X)5Si3 inner layer. After oxidation, the formation of SiO2 and TiO2 can quickly seal the holes in the coating and form a dense SiO2/TiO2 scale.

KW - C11 MoSi

KW - C40 (Mo,Ti)Si

KW - Nb-Si based ultrahigh temperature alloy

KW - Oxidation behavior

KW - Slurry sintering

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DO - 10.1016/j.corsci.2023.111293

M3 - 文章

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SN - 0010-938X

VL - 220

JO - Corrosion Science

JF - Corrosion Science

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Microstructure and oxidation resistance of Ti modified Si-Mo coating on Nb-Si based ultrahigh temperature alloy

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