Hot corrosion behaviour of Al-Si-Dy coating on new γ′-strengthened cobalt-based alloy

Mingyue Chen; Kanglu Feng; Meifeng Li; Chungen Zhou

doi:10.1016/j.corsci.2020.108431

Hot corrosion behaviour of Al-Si-Dy coating on new γ′-strengthened cobalt-based alloy

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

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

20 Scopus citations

Abstract

Dy-Si-modified aluminide coating was deposited onto new γ′-strengthened cobalt-based superalloy by pack cementation technology. The coating is composed of an outer layer and a diffusion zone in thickness of around 70 μm and 11 μm, respectively. The outer layer consists mainly of AlCo containing Al₅Co₂ dispersoids. The weight gain of Al-Si-Dy coating after hot corrosion at 1173 K for 100 h is 0.36 mg/cm². Al-Si-Dy coating shows better corrosion resistance by contrast with Al and Al-Si coating. The hot corrosion mechanisms of Al-Si-Dy coating is discussed in this study.

Original language	English
Article number	108431
Journal	Corrosion Science
Volume	166
DOIs	https://doi.org/10.1016/j.corsci.2020.108431
State	Published - 15 Apr 2020

Keywords

Metal coatings
Oxidation
Superalloys

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10.1016/j.corsci.2020.108431

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@article{2edcd1de5dc14a7f9f34ca53e7ce2034,

title = "Hot corrosion behaviour of Al-Si-Dy coating on new γ′-strengthened cobalt-based alloy",

abstract = "Dy-Si-modified aluminide coating was deposited onto new γ′-strengthened cobalt-based superalloy by pack cementation technology. The coating is composed of an outer layer and a diffusion zone in thickness of around 70 μm and 11 μm, respectively. The outer layer consists mainly of AlCo containing Al5Co2 dispersoids. The weight gain of Al-Si-Dy coating after hot corrosion at 1173 K for 100 h is 0.36 mg/cm2. Al-Si-Dy coating shows better corrosion resistance by contrast with Al and Al-Si coating. The hot corrosion mechanisms of Al-Si-Dy coating is discussed in this study.",

keywords = "Metal coatings, Oxidation, Superalloys",

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

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

year = "2020",

month = apr,

day = "15",

doi = "10.1016/j.corsci.2020.108431",

language = "英语",

volume = "166",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Hot corrosion behaviour of Al-Si-Dy coating on new γ′-strengthened cobalt-based alloy

AU - Chen, Mingyue

AU - Feng, Kanglu

AU - Li, Meifeng

AU - Zhou, Chungen

PY - 2020/4/15

Y1 - 2020/4/15

N2 - Dy-Si-modified aluminide coating was deposited onto new γ′-strengthened cobalt-based superalloy by pack cementation technology. The coating is composed of an outer layer and a diffusion zone in thickness of around 70 μm and 11 μm, respectively. The outer layer consists mainly of AlCo containing Al5Co2 dispersoids. The weight gain of Al-Si-Dy coating after hot corrosion at 1173 K for 100 h is 0.36 mg/cm2. Al-Si-Dy coating shows better corrosion resistance by contrast with Al and Al-Si coating. The hot corrosion mechanisms of Al-Si-Dy coating is discussed in this study.

AB - Dy-Si-modified aluminide coating was deposited onto new γ′-strengthened cobalt-based superalloy by pack cementation technology. The coating is composed of an outer layer and a diffusion zone in thickness of around 70 μm and 11 μm, respectively. The outer layer consists mainly of AlCo containing Al5Co2 dispersoids. The weight gain of Al-Si-Dy coating after hot corrosion at 1173 K for 100 h is 0.36 mg/cm2. Al-Si-Dy coating shows better corrosion resistance by contrast with Al and Al-Si coating. The hot corrosion mechanisms of Al-Si-Dy coating is discussed in this study.

KW - Metal coatings

KW - Oxidation

KW - Superalloys

UR - https://www.scopus.com/pages/publications/85077913859

U2 - 10.1016/j.corsci.2020.108431

DO - 10.1016/j.corsci.2020.108431

M3 - 文章

AN - SCOPUS:85077913859

SN - 0010-938X

VL - 166

JO - Corrosion Science

JF - Corrosion Science

M1 - 108431

ER -

Hot corrosion behaviour of Al-Si-Dy coating on new γ′-strengthened cobalt-based alloy

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Keywords

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