Highly oxidation resistant MCrAlY bond coats prepared by heat treatment under low oxygen content

Guo Hui Meng; Hong Liu; Mei Jun Liu; Tong Xu; Guan Jun Yang; Cheng Xin Li; Chang Jiu Li

doi:10.1016/j.surfcoat.2019.04.046

Highly oxidation resistant MCrAlY bond coats prepared by heat treatment under low oxygen content

School of Materials Science and Engineering

Xi'an Jiaotong University

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

96 Scopus citations

Abstract

High-performance gas turbines and aircraft engines require high oxidation resistance MCrAlY bond coats. In this study, a novel heat treatment under low oxygen content was developed to prepare highly oxidation resistant MCrAlY bond coats. The results showed that after the heat treatment, metallic phases without as-deposited alumina film were exposed on the MCrAlY bond coat surface. The α-Al ₂ O ₃ thermally grown oxide (TGO) with a larger grain size was formed on the heat-treated bond coat surface during isothermal oxidation. This larger α-Al ₂ O ₃ TGO grain size significantly inhibited the TGO layer growth of MCrAlY bond coats by 2.7 times.

Original language	English
Pages (from-to)	192-201
Number of pages	10
Journal	Surface and Coatings Technology
Volume	368
DOIs	https://doi.org/10.1016/j.surfcoat.2019.04.046
State	Published - 25 Jun 2019

Keywords

Heat treatment
High temperature oxidation
MCrAlY bond coat
Surface microstructure
Thermal barrier coatings
Thermally grown oxide

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10.1016/j.surfcoat.2019.04.046

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@article{dc7913cc5e1a45aba08327a915633ede,

title = "Highly oxidation resistant MCrAlY bond coats prepared by heat treatment under low oxygen content",

abstract = " High-performance gas turbines and aircraft engines require high oxidation resistance MCrAlY bond coats. In this study, a novel heat treatment under low oxygen content was developed to prepare highly oxidation resistant MCrAlY bond coats. The results showed that after the heat treatment, metallic phases without as-deposited alumina film were exposed on the MCrAlY bond coat surface. The α-Al 2 O 3 thermally grown oxide (TGO) with a larger grain size was formed on the heat-treated bond coat surface during isothermal oxidation. This larger α-Al 2 O 3 TGO grain size significantly inhibited the TGO layer growth of MCrAlY bond coats by 2.7 times.",

keywords = "Heat treatment, High temperature oxidation, MCrAlY bond coat, Surface microstructure, Thermal barrier coatings, Thermally grown oxide",

author = "Meng, \{Guo Hui\} and Hong Liu and Liu, \{Mei Jun\} and Tong Xu and Yang, \{Guan Jun\} and Li, \{Cheng Xin\} and Li, \{Chang Jiu\}",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jun,

day = "25",

doi = "10.1016/j.surfcoat.2019.04.046",

language = "英语",

volume = "368",

pages = "192--201",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Highly oxidation resistant MCrAlY bond coats prepared by heat treatment under low oxygen content

AU - Meng, Guo Hui

AU - Liu, Hong

AU - Liu, Mei Jun

AU - Xu, Tong

AU - Yang, Guan Jun

AU - Li, Cheng Xin

AU - Li, Chang Jiu

PY - 2019/6/25

Y1 - 2019/6/25

N2 - High-performance gas turbines and aircraft engines require high oxidation resistance MCrAlY bond coats. In this study, a novel heat treatment under low oxygen content was developed to prepare highly oxidation resistant MCrAlY bond coats. The results showed that after the heat treatment, metallic phases without as-deposited alumina film were exposed on the MCrAlY bond coat surface. The α-Al 2 O 3 thermally grown oxide (TGO) with a larger grain size was formed on the heat-treated bond coat surface during isothermal oxidation. This larger α-Al 2 O 3 TGO grain size significantly inhibited the TGO layer growth of MCrAlY bond coats by 2.7 times.

AB - High-performance gas turbines and aircraft engines require high oxidation resistance MCrAlY bond coats. In this study, a novel heat treatment under low oxygen content was developed to prepare highly oxidation resistant MCrAlY bond coats. The results showed that after the heat treatment, metallic phases without as-deposited alumina film were exposed on the MCrAlY bond coat surface. The α-Al 2 O 3 thermally grown oxide (TGO) with a larger grain size was formed on the heat-treated bond coat surface during isothermal oxidation. This larger α-Al 2 O 3 TGO grain size significantly inhibited the TGO layer growth of MCrAlY bond coats by 2.7 times.

KW - Heat treatment

KW - High temperature oxidation

KW - MCrAlY bond coat

KW - Surface microstructure

KW - Thermal barrier coatings

KW - Thermally grown oxide

UR - https://www.scopus.com/pages/publications/85064333355

U2 - 10.1016/j.surfcoat.2019.04.046

DO - 10.1016/j.surfcoat.2019.04.046

M3 - 文章

AN - SCOPUS:85064333355

SN - 0257-8972

VL - 368

SP - 192

EP - 201

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Highly oxidation resistant MCrAlY bond coats prepared by heat treatment under low oxygen content

Abstract

Keywords

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