Effect of Dy on oxide scale adhesion of NiAl coatings at 1200°C

Hongbo Guo; Tian Zhang; Shixing Wang; Shengkai Gong

doi:10.1016/j.corsci.2011.03.003

Effect of Dy on oxide scale adhesion of NiAl coatings at 1200°C

Hongbo Guo^*
, Tian Zhang
, Shixing Wang
, Shengkai Gong

^*Corresponding author for this work

School of Materials Science and Engineering

Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)

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

101 Scopus citations

Abstract

The cyclic oxidation behaviour of β-NiAlDy coatings produced by electron beam physical vapour deposition (EB-PVD) was investigated. For the Dy-free NiAl coating, numerous voids developed at the Al₂O₃ scale/NiAl interface and sulfur was found to segregate at the void surfaces, leading to early spallation of the scale. The addition of Dy prevented sulfur segregation and void formation at the scale/NiAl interface. As a result, the scale grown on the NiAlDy coating remained adherent and no spallation occurred even after 400h cyclic oxidation. The 0.05at.% Dy doped coating revealed lower oxidation rate than the more Dy doped coatings.

Original language	English
Pages (from-to)	2228-2232
Number of pages	5
Journal	Corrosion Science
Volume	53
Issue number	6
DOIs	https://doi.org/10.1016/j.corsci.2011.03.003
State	Published - Jun 2011

Keywords

A. Metal coating
B. AES
B. TEM
C. Oxidation
C. Segregation

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10.1016/j.corsci.2011.03.003

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@article{e429b4c7472b48ac9834496c74cce393,

title = "Effect of Dy on oxide scale adhesion of NiAl coatings at 1200°C",

abstract = "The cyclic oxidation behaviour of β-NiAlDy coatings produced by electron beam physical vapour deposition (EB-PVD) was investigated. For the Dy-free NiAl coating, numerous voids developed at the Al2O3 scale/NiAl interface and sulfur was found to segregate at the void surfaces, leading to early spallation of the scale. The addition of Dy prevented sulfur segregation and void formation at the scale/NiAl interface. As a result, the scale grown on the NiAlDy coating remained adherent and no spallation occurred even after 400h cyclic oxidation. The 0.05at.\% Dy doped coating revealed lower oxidation rate than the more Dy doped coatings.",

keywords = "A. Metal coating, B. AES, B. TEM, C. Oxidation, C. Segregation",

author = "Hongbo Guo and Tian Zhang and Shixing Wang and Shengkai Gong",

year = "2011",

month = jun,

doi = "10.1016/j.corsci.2011.03.003",

language = "英语",

volume = "53",

pages = "2228--2232",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

number = "6",

}

TY - JOUR

T1 - Effect of Dy on oxide scale adhesion of NiAl coatings at 1200°C

AU - Guo, Hongbo

AU - Zhang, Tian

AU - Wang, Shixing

AU - Gong, Shengkai

PY - 2011/6

Y1 - 2011/6

N2 - The cyclic oxidation behaviour of β-NiAlDy coatings produced by electron beam physical vapour deposition (EB-PVD) was investigated. For the Dy-free NiAl coating, numerous voids developed at the Al2O3 scale/NiAl interface and sulfur was found to segregate at the void surfaces, leading to early spallation of the scale. The addition of Dy prevented sulfur segregation and void formation at the scale/NiAl interface. As a result, the scale grown on the NiAlDy coating remained adherent and no spallation occurred even after 400h cyclic oxidation. The 0.05at.% Dy doped coating revealed lower oxidation rate than the more Dy doped coatings.

AB - The cyclic oxidation behaviour of β-NiAlDy coatings produced by electron beam physical vapour deposition (EB-PVD) was investigated. For the Dy-free NiAl coating, numerous voids developed at the Al2O3 scale/NiAl interface and sulfur was found to segregate at the void surfaces, leading to early spallation of the scale. The addition of Dy prevented sulfur segregation and void formation at the scale/NiAl interface. As a result, the scale grown on the NiAlDy coating remained adherent and no spallation occurred even after 400h cyclic oxidation. The 0.05at.% Dy doped coating revealed lower oxidation rate than the more Dy doped coatings.

KW - A. Metal coating

KW - B. AES

KW - B. TEM

KW - C. Oxidation

KW - C. Segregation

UR - https://www.scopus.com/pages/publications/79955025426

U2 - 10.1016/j.corsci.2011.03.003

DO - 10.1016/j.corsci.2011.03.003

M3 - 文章

AN - SCOPUS:79955025426

SN - 0010-938X

VL - 53

SP - 2228

EP - 2232

JO - Corrosion Science

JF - Corrosion Science

IS - 6

ER -

Effect of Dy on oxide scale adhesion of NiAl coatings at 1200°C

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Keywords

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