Element diffusion during fabrication of EB-PVD NiAl coating and its 1100 °C isothermal oxidation behavior (II)

Hefei Li; Shufeng Tao; Zhaohui Zhou; Lidong Sun; Hesnawi.A; Shengkai Gong

doi:10.1016/j.surfcoat.2006.09.081

Element diffusion during fabrication of EB-PVD NiAl coating and its 1100 °C isothermal oxidation behavior (II)

Hefei Li
, Shufeng Tao
, Zhaohui Zhou
, Lidong Sun
, Hesnawi.A
, Shengkai Gong^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University
Beijing General Research Institute of Mining and Metallurgy

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

22 Scopus citations

Abstract

A two-layer NiAl coating can be deposited by electron beam physical vapour deposition (EB-PVD) on Ni-based superalloy, and the isothermal oxidation test at 1100 °C in air was conducted to evaluate the oxidation behavior of the coating. The dominant phase changed from β-phase to γ′-phase with the oxidation going on. Oxide ridges can be detected on the surface of the as-processed coating, oxide scales on the coating surface can be divided into two categories including the primary scales and the secondary scales formed only after the spallation of the primary scales. The primary scales form to connect the isolated oxide ridges, while the secondary scale's peak clipping effect may cause the surface morphology more and more even.

Original language	English
Pages (from-to)	6589-6592
Number of pages	4
Journal	Surface and Coatings Technology
Volume	201
Issue number	15
DOIs	https://doi.org/10.1016/j.surfcoat.2006.09.081
State	Published - 23 Apr 2007

Keywords

NiAl bond coat
Oxidation resistance
Thermal barrier coatings

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10.1016/j.surfcoat.2006.09.081

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title = "Element diffusion during fabrication of EB-PVD NiAl coating and its 1100 °C isothermal oxidation behavior (II)",

abstract = "A two-layer NiAl coating can be deposited by electron beam physical vapour deposition (EB-PVD) on Ni-based superalloy, and the isothermal oxidation test at 1100 °C in air was conducted to evaluate the oxidation behavior of the coating. The dominant phase changed from β-phase to γ′-phase with the oxidation going on. Oxide ridges can be detected on the surface of the as-processed coating, oxide scales on the coating surface can be divided into two categories including the primary scales and the secondary scales formed only after the spallation of the primary scales. The primary scales form to connect the isolated oxide ridges, while the secondary scale's peak clipping effect may cause the surface morphology more and more even.",

keywords = "NiAl bond coat, Oxidation resistance, Thermal barrier coatings",

author = "Hefei Li and Shufeng Tao and Zhaohui Zhou and Lidong Sun and Hesnawi.A and Shengkai Gong",

year = "2007",

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doi = "10.1016/j.surfcoat.2006.09.081",

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TY - JOUR

T1 - Element diffusion during fabrication of EB-PVD NiAl coating and its 1100 °C isothermal oxidation behavior (II)

AU - Li, Hefei

AU - Tao, Shufeng

AU - Zhou, Zhaohui

AU - Sun, Lidong

AU - Hesnawi.A,

AU - Gong, Shengkai

PY - 2007/4/23

Y1 - 2007/4/23

N2 - A two-layer NiAl coating can be deposited by electron beam physical vapour deposition (EB-PVD) on Ni-based superalloy, and the isothermal oxidation test at 1100 °C in air was conducted to evaluate the oxidation behavior of the coating. The dominant phase changed from β-phase to γ′-phase with the oxidation going on. Oxide ridges can be detected on the surface of the as-processed coating, oxide scales on the coating surface can be divided into two categories including the primary scales and the secondary scales formed only after the spallation of the primary scales. The primary scales form to connect the isolated oxide ridges, while the secondary scale's peak clipping effect may cause the surface morphology more and more even.

AB - A two-layer NiAl coating can be deposited by electron beam physical vapour deposition (EB-PVD) on Ni-based superalloy, and the isothermal oxidation test at 1100 °C in air was conducted to evaluate the oxidation behavior of the coating. The dominant phase changed from β-phase to γ′-phase with the oxidation going on. Oxide ridges can be detected on the surface of the as-processed coating, oxide scales on the coating surface can be divided into two categories including the primary scales and the secondary scales formed only after the spallation of the primary scales. The primary scales form to connect the isolated oxide ridges, while the secondary scale's peak clipping effect may cause the surface morphology more and more even.

KW - NiAl bond coat

KW - Oxidation resistance

KW - Thermal barrier coatings

UR - https://www.scopus.com/pages/publications/33847399682

U2 - 10.1016/j.surfcoat.2006.09.081

DO - 10.1016/j.surfcoat.2006.09.081

M3 - 文章

AN - SCOPUS:33847399682

SN - 0257-8972

VL - 201

SP - 6589

EP - 6592

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 15

ER -

Element diffusion during fabrication of EB-PVD NiAl coating and its 1100 °C isothermal oxidation behavior (II)

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Keywords

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