Superior oxidation resistant MCrAlY bond coats prepared by controlled atmosphere heat treatment

Guo Hui Meng; Hong Liu; Peng Yun Xu; Guang Rong Li; Tong Xu; Guan Jun Yang; Chang Jiu Li

doi:10.1016/j.corsci.2020.108653

Superior oxidation resistant MCrAlY bond coats prepared by controlled atmosphere heat treatment

Guo Hui Meng
, Hong Liu
, Peng Yun Xu
, Guang Rong Li
, Tong Xu
, Guan Jun Yang
, Chang Jiu Li

材料科学与工程学院

Xi'an Jiaotong University
University of Toronto

科研成果: 期刊稿件 › 文章 › 同行评审

70 引用（Scopus）

摘要

Long-life thermal barrier coatings for high-performance gas turbines require MCrAlY bond coats with high oxidation resistance. In this study, the oxidation resistance of bond coats was significantly improved by a novel controlled atmosphere heat treatment (CAHT). Results show that large α-Al₂O₃ grains with a grain size up to micron were formed on the surface of heat-treated MCrAlY bond coats. These large α-Al₂O₃ grains significantly improved the oxidation resistance of bond coats. We found that the grain size of α-Al₂O₃ and the surface microstructure changes of bond coats can be controlled by the oxygen partial pressure of CAHT.

源语言	英语
文章编号	108653
期刊	Corrosion Science
卷	170
DOI	https://doi.org/10.1016/j.corsci.2020.108653
出版状态	已出版 - 1 7月 2020

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10.1016/j.corsci.2020.108653

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title = "Superior oxidation resistant MCrAlY bond coats prepared by controlled atmosphere heat treatment",

abstract = "Long-life thermal barrier coatings for high-performance gas turbines require MCrAlY bond coats with high oxidation resistance. In this study, the oxidation resistance of bond coats was significantly improved by a novel controlled atmosphere heat treatment (CAHT). Results show that large α-Al2O3 grains with a grain size up to micron were formed on the surface of heat-treated MCrAlY bond coats. These large α-Al2O3 grains significantly improved the oxidation resistance of bond coats. We found that the grain size of α-Al2O3 and the surface microstructure changes of bond coats can be controlled by the oxygen partial pressure of CAHT.",

keywords = "Controlled atmosphere heat treatment, Gas turbines, High temperature oxidation, MCrAlY bond coats, Oxygen partial pressure, Thermal barrier coatings",

author = "Meng, \{Guo Hui\} and Hong Liu and Xu, \{Peng Yun\} and Li, \{Guang Rong\} and Tong Xu and Yang, \{Guan Jun\} and Li, \{Chang Jiu\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

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doi = "10.1016/j.corsci.2020.108653",

language = "英语",

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journal = "Corrosion Science",

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TY - JOUR

T1 - Superior oxidation resistant MCrAlY bond coats prepared by controlled atmosphere heat treatment

AU - Meng, Guo Hui

AU - Liu, Hong

AU - Xu, Peng Yun

AU - Li, Guang Rong

AU - Xu, Tong

AU - Yang, Guan Jun

AU - Li, Chang Jiu

PY - 2020/7/1

Y1 - 2020/7/1

N2 - Long-life thermal barrier coatings for high-performance gas turbines require MCrAlY bond coats with high oxidation resistance. In this study, the oxidation resistance of bond coats was significantly improved by a novel controlled atmosphere heat treatment (CAHT). Results show that large α-Al2O3 grains with a grain size up to micron were formed on the surface of heat-treated MCrAlY bond coats. These large α-Al2O3 grains significantly improved the oxidation resistance of bond coats. We found that the grain size of α-Al2O3 and the surface microstructure changes of bond coats can be controlled by the oxygen partial pressure of CAHT.

AB - Long-life thermal barrier coatings for high-performance gas turbines require MCrAlY bond coats with high oxidation resistance. In this study, the oxidation resistance of bond coats was significantly improved by a novel controlled atmosphere heat treatment (CAHT). Results show that large α-Al2O3 grains with a grain size up to micron were formed on the surface of heat-treated MCrAlY bond coats. These large α-Al2O3 grains significantly improved the oxidation resistance of bond coats. We found that the grain size of α-Al2O3 and the surface microstructure changes of bond coats can be controlled by the oxygen partial pressure of CAHT.

KW - Controlled atmosphere heat treatment

KW - Gas turbines

KW - High temperature oxidation

KW - MCrAlY bond coats

KW - Oxygen partial pressure

KW - Thermal barrier coatings

UR - https://www.scopus.com/pages/publications/85083528343

U2 - 10.1016/j.corsci.2020.108653

DO - 10.1016/j.corsci.2020.108653

M3 - 文章

AN - SCOPUS:85083528343

SN - 0010-938X

VL - 170

JO - Corrosion Science

JF - Corrosion Science

M1 - 108653

ER -

Superior oxidation resistant MCrAlY bond coats prepared by controlled atmosphere heat treatment

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