Microstructure and oxidation behavior of Mo-Si-Al coating on Nb-based alloy

Yu Liu; Wei Shao; Changliang Wang; Chungen Zhou

doi:10.1016/j.jallcom.2017.11.339

Microstructure and oxidation behavior of Mo-Si-Al coating on Nb-based alloy

Yu Liu
, Wei Shao
, Changliang Wang
, Chungen Zhou^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

30 Scopus citations

Abstract

A Mo-Si-Al coating was prepared on Nb-based alloy utilizing D-gun spraying of a Mo layer followed by co-deposition of Si and Al. The coating possesses a three-layer structure, containing a Mo(Si,Al)₂ outer layer, a middle layer composed of Mo₅(Si,Al)₃ and Al₈Mo₃, and an AlMo₃ inner layer. Static oxidation test was carried out at 1250 °C and the oxidation behavior of the coating was investigated. The result indicates that the oxidation of the Mo-Si-Al coating obeys a parabolic law. The oxidation resistance of the substrate is remarkably enhanced by applying a Mo-Si-Al coating, owing to the formation of a protective external α-Al₂O₃ scale.

Original language	English
Pages (from-to)	2247-2255
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	735
DOIs	https://doi.org/10.1016/j.jallcom.2017.11.339
State	Published - 25 Feb 2018

Keywords

Intermetallics
Metal coatings
Microstructure
Oxidation

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10.1016/j.jallcom.2017.11.339

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title = "Microstructure and oxidation behavior of Mo-Si-Al coating on Nb-based alloy",

abstract = "A Mo-Si-Al coating was prepared on Nb-based alloy utilizing D-gun spraying of a Mo layer followed by co-deposition of Si and Al. The coating possesses a three-layer structure, containing a Mo(Si,Al)2 outer layer, a middle layer composed of Mo5(Si,Al)3 and Al8Mo3, and an AlMo3 inner layer. Static oxidation test was carried out at 1250 °C and the oxidation behavior of the coating was investigated. The result indicates that the oxidation of the Mo-Si-Al coating obeys a parabolic law. The oxidation resistance of the substrate is remarkably enhanced by applying a Mo-Si-Al coating, owing to the formation of a protective external α-Al2O3 scale.",

keywords = "Intermetallics, Metal coatings, Microstructure, Oxidation",

author = "Yu Liu and Wei Shao and Changliang Wang and Chungen Zhou",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

month = feb,

day = "25",

doi = "10.1016/j.jallcom.2017.11.339",

language = "英语",

volume = "735",

pages = "2247--2255",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Microstructure and oxidation behavior of Mo-Si-Al coating on Nb-based alloy

AU - Liu, Yu

AU - Shao, Wei

AU - Wang, Changliang

AU - Zhou, Chungen

PY - 2018/2/25

Y1 - 2018/2/25

N2 - A Mo-Si-Al coating was prepared on Nb-based alloy utilizing D-gun spraying of a Mo layer followed by co-deposition of Si and Al. The coating possesses a three-layer structure, containing a Mo(Si,Al)2 outer layer, a middle layer composed of Mo5(Si,Al)3 and Al8Mo3, and an AlMo3 inner layer. Static oxidation test was carried out at 1250 °C and the oxidation behavior of the coating was investigated. The result indicates that the oxidation of the Mo-Si-Al coating obeys a parabolic law. The oxidation resistance of the substrate is remarkably enhanced by applying a Mo-Si-Al coating, owing to the formation of a protective external α-Al2O3 scale.

AB - A Mo-Si-Al coating was prepared on Nb-based alloy utilizing D-gun spraying of a Mo layer followed by co-deposition of Si and Al. The coating possesses a three-layer structure, containing a Mo(Si,Al)2 outer layer, a middle layer composed of Mo5(Si,Al)3 and Al8Mo3, and an AlMo3 inner layer. Static oxidation test was carried out at 1250 °C and the oxidation behavior of the coating was investigated. The result indicates that the oxidation of the Mo-Si-Al coating obeys a parabolic law. The oxidation resistance of the substrate is remarkably enhanced by applying a Mo-Si-Al coating, owing to the formation of a protective external α-Al2O3 scale.

KW - Intermetallics

KW - Metal coatings

KW - Microstructure

KW - Oxidation

UR - https://www.scopus.com/pages/publications/85036664501

U2 - 10.1016/j.jallcom.2017.11.339

DO - 10.1016/j.jallcom.2017.11.339

M3 - 文章

AN - SCOPUS:85036664501

SN - 0925-8388

VL - 735

SP - 2247

EP - 2255

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Microstructure and oxidation behavior of Mo-Si-Al coating on Nb-based alloy

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Keywords

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