Excellent oxidation resistance: A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating on Nb-Si based alloy

Weiping Zhang; Yanqiang Qiao; Xiping Guo; Longfei Li; Xi Nan

doi:10.1016/j.corsci.2025.112863

Excellent oxidation resistance: A dense and well-bonded MoSi₂/(Nb,X)Si₂ composite coating on Nb-Si based alloy

Weiping Zhang, Yanqiang Qiao, Xiping Guo, Longfei Li, Xi Nan

School of Materials Sience and Engineering

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

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Abstract

A dense and well-bonded MoSi₂/(Nb,X)Si₂ composite coating was developed on Nb-Si based alloy by the combination of Si pack cementation with pre-oxidation and then Mo-Si slurry sintering. The formation of a SiO₂ scale with proper thickness by pre-oxidation on (Nb,X)Si₂ layer, can significantly improve the interface bonding between MoSi₂ layer and (Nb,X)Si₂ layer, as well as the compactness of MoSi₂ layer. The MoSi₂/(Nb,X)Si₂ composite coating exhibits excellent oxidation resistance at 1250 ℃ and 1350 ℃, which can be attributed to the dense structure of MoSi₂ layer, the sufficient Si source from (Nb,X)Si₂ layer and the good interfacial bonding.

Original language	English
Article number	112863
Journal	Corrosion Science
Volume	249
DOIs	https://doi.org/10.1016/j.corsci.2025.112863
State	Published - Jun 2025

Keywords

Composite coating
MoSi
Nb-Si based alloy
Oxidation
Slurry sintering

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title = "Excellent oxidation resistance: A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating on Nb-Si based alloy",

abstract = "A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating was developed on Nb-Si based alloy by the combination of Si pack cementation with pre-oxidation and then Mo-Si slurry sintering. The formation of a SiO2 scale with proper thickness by pre-oxidation on (Nb,X)Si2 layer, can significantly improve the interface bonding between MoSi2 layer and (Nb,X)Si2 layer, as well as the compactness of MoSi2 layer. The MoSi2/(Nb,X)Si2 composite coating exhibits excellent oxidation resistance at 1250 ℃ and 1350 ℃, which can be attributed to the dense structure of MoSi2 layer, the sufficient Si source from (Nb,X)Si2 layer and the good interfacial bonding.",

keywords = "Composite coating, MoSi, Nb-Si based alloy, Oxidation, Slurry sintering",

author = "Weiping Zhang and Yanqiang Qiao and Xiping Guo and Longfei Li and Xi Nan",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier Ltd",

year = "2025",

month = jun,

doi = "10.1016/j.corsci.2025.112863",

language = "英语",

volume = "249",

journal = "Corrosion Science",

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TY - JOUR

T1 - Excellent oxidation resistance

T2 - A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating on Nb-Si based alloy

AU - Zhang, Weiping

AU - Qiao, Yanqiang

AU - Guo, Xiping

AU - Li, Longfei

AU - Nan, Xi

PY - 2025/6

Y1 - 2025/6

N2 - A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating was developed on Nb-Si based alloy by the combination of Si pack cementation with pre-oxidation and then Mo-Si slurry sintering. The formation of a SiO2 scale with proper thickness by pre-oxidation on (Nb,X)Si2 layer, can significantly improve the interface bonding between MoSi2 layer and (Nb,X)Si2 layer, as well as the compactness of MoSi2 layer. The MoSi2/(Nb,X)Si2 composite coating exhibits excellent oxidation resistance at 1250 ℃ and 1350 ℃, which can be attributed to the dense structure of MoSi2 layer, the sufficient Si source from (Nb,X)Si2 layer and the good interfacial bonding.

AB - A dense and well-bonded MoSi2/(Nb,X)Si2 composite coating was developed on Nb-Si based alloy by the combination of Si pack cementation with pre-oxidation and then Mo-Si slurry sintering. The formation of a SiO2 scale with proper thickness by pre-oxidation on (Nb,X)Si2 layer, can significantly improve the interface bonding between MoSi2 layer and (Nb,X)Si2 layer, as well as the compactness of MoSi2 layer. The MoSi2/(Nb,X)Si2 composite coating exhibits excellent oxidation resistance at 1250 ℃ and 1350 ℃, which can be attributed to the dense structure of MoSi2 layer, the sufficient Si source from (Nb,X)Si2 layer and the good interfacial bonding.

KW - Composite coating

KW - MoSi

KW - Nb-Si based alloy

KW - Oxidation

KW - Slurry sintering

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U2 - 10.1016/j.corsci.2025.112863

DO - 10.1016/j.corsci.2025.112863

M3 - 文章

AN - SCOPUS:86000612739

SN - 0010-938X

VL - 249

JO - Corrosion Science

JF - Corrosion Science

M1 - 112863

ER -

Excellent oxidation resistance: A dense and well-bonded MoSi₂/(Nb,X)Si₂ composite coating on Nb-Si based alloy

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Keywords

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