The role of Dy doping on cyclic oxidation behavior of Al-Si coating on new cobalt-based γ/γ′ superalloy

Kanglu Feng; Zheng Chen; Meifeng Li; Mingyue Chen; Chungen Zhou

doi:10.1016/j.corsci.2021.110077

The role of Dy doping on cyclic oxidation behavior of Al-Si coating on new cobalt-based γ/γ′ superalloy

Kanglu Feng
, Zheng Chen
, Meifeng Li^*
, Mingyue Chen
, Chungen Zhou

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

6 Scopus citations

Abstract

The Al-Si-Dy coating is prepared on the γ′-strengthened cobalt-based superalloys by pack cementation method. Cyclic oxidation resistance of the coating at 1050 ℃ is investigated through experimental and computing methods. The cycle oxidation life of the coating is more than 1.5 times that of Al-Si coating. The oxide scale on Al-Si-Dy coating is denser and has stronger adhesion compared to Al-Si coating. Dy doping improves the cyclic oxidation resistance of Al-Si coated sample. The superior cyclic oxidation resistance of the coating is ascribed to enhanced adhesion energy of oxide scale, which is caused by stronger Dy–O bond.

Original language	English
Article number	110077
Journal	Corrosion Science
Volume	197
DOIs	https://doi.org/10.1016/j.corsci.2021.110077
State	Published - 1 Apr 2022

Keywords

Metal coatings
Oxidation
Superalloys
Thermal cycling

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10.1016/j.corsci.2021.110077

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title = "The role of Dy doping on cyclic oxidation behavior of Al-Si coating on new cobalt-based γ/γ′ superalloy",

abstract = "The Al-Si-Dy coating is prepared on the γ′-strengthened cobalt-based superalloys by pack cementation method. Cyclic oxidation resistance of the coating at 1050 ℃ is investigated through experimental and computing methods. The cycle oxidation life of the coating is more than 1.5 times that of Al-Si coating. The oxide scale on Al-Si-Dy coating is denser and has stronger adhesion compared to Al-Si coating. Dy doping improves the cyclic oxidation resistance of Al-Si coated sample. The superior cyclic oxidation resistance of the coating is ascribed to enhanced adhesion energy of oxide scale, which is caused by stronger Dy{\textendash}O bond.",

keywords = "Metal coatings, Oxidation, Superalloys, Thermal cycling",

author = "Kanglu Feng and Zheng Chen and Meifeng Li and Mingyue Chen and Chungen Zhou",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.corsci.2021.110077",

language = "英语",

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journal = "Corrosion Science",

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TY - JOUR

T1 - The role of Dy doping on cyclic oxidation behavior of Al-Si coating on new cobalt-based γ/γ′ superalloy

AU - Feng, Kanglu

AU - Chen, Zheng

AU - Li, Meifeng

AU - Chen, Mingyue

AU - Zhou, Chungen

PY - 2022/4/1

Y1 - 2022/4/1

N2 - The Al-Si-Dy coating is prepared on the γ′-strengthened cobalt-based superalloys by pack cementation method. Cyclic oxidation resistance of the coating at 1050 ℃ is investigated through experimental and computing methods. The cycle oxidation life of the coating is more than 1.5 times that of Al-Si coating. The oxide scale on Al-Si-Dy coating is denser and has stronger adhesion compared to Al-Si coating. Dy doping improves the cyclic oxidation resistance of Al-Si coated sample. The superior cyclic oxidation resistance of the coating is ascribed to enhanced adhesion energy of oxide scale, which is caused by stronger Dy–O bond.

AB - The Al-Si-Dy coating is prepared on the γ′-strengthened cobalt-based superalloys by pack cementation method. Cyclic oxidation resistance of the coating at 1050 ℃ is investigated through experimental and computing methods. The cycle oxidation life of the coating is more than 1.5 times that of Al-Si coating. The oxide scale on Al-Si-Dy coating is denser and has stronger adhesion compared to Al-Si coating. Dy doping improves the cyclic oxidation resistance of Al-Si coated sample. The superior cyclic oxidation resistance of the coating is ascribed to enhanced adhesion energy of oxide scale, which is caused by stronger Dy–O bond.

KW - Metal coatings

KW - Oxidation

KW - Superalloys

KW - Thermal cycling

UR - https://www.scopus.com/pages/publications/85122060802

U2 - 10.1016/j.corsci.2021.110077

DO - 10.1016/j.corsci.2021.110077

M3 - 文章

AN - SCOPUS:85122060802

SN - 0010-938X

VL - 197

JO - Corrosion Science

JF - Corrosion Science

M1 - 110077

ER -

The role of Dy doping on cyclic oxidation behavior of Al-Si coating on new cobalt-based γ/γ′ superalloy

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Keywords

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