Oxidation behavior of a glass-based composite coating with a low expansion cermet bond-coat and an AlN diffusion barrier on K417G superalloy

Xin Wang; Shenglong Zhu; Zhengxian Li; Litao Chang; Qing Wu; Yusheng Zhang; Fuhui Wang

doi:10.1016/j.corsci.2018.10.001

Oxidation behavior of a glass-based composite coating with a low expansion cermet bond-coat and an AlN diffusion barrier on K417G superalloy

Xin Wang, Shenglong Zhu, Zhengxian Li, Litao Chang, Qing Wu, Yusheng Zhang, Fuhui Wang

Materials Engineering

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Abstract

A ceramic particle reinforced glass matrix composite coating with a novel Ni + CrAlYSiN cermet bond-coat and an AlN diffusion barrier was prepared on K417G superalloy, and its oxidation behavior at 1000 °C was investigated. The oxidation rate of the coating was significantly reduced compared with the Ni + CrAlYSiN coating, because the glass-based top-coat promoted selective oxidation of Al within the bond-coat due to the oxygen barrier effect. Furthermore, cyclic oxidation resistance of the coating was improved by the low expansion bond-coat while weakened by the microstructure degradation of the top-coat. Additionally, the AlN diffusion barrier effectively restrained interdiffusion between bond-coat and substrate.

Original language	English
Pages (from-to)	283-294
Journal	Corrosion Science
Volume	145
Early online date	9 Oct 2018
DOIs	https://doi.org/10.1016/j.corsci.2018.10.001
Publication status	Published - 1 Dec 2018

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10.1016/j.corsci.2018.10.001

Oxidation behavior of a glass-based composite coating with a low expansion cermet bond-coat and an AlN diffusion barrier on K417G superalloyAccepted author manuscript, 5.31 MBLicence: CC BY-NC-ND

https://linkinghub.elsevier.com/retrieve/pii/S0010938X17316992

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title = "Oxidation behavior of a glass-based composite coating with a low expansion cermet bond-coat and an AlN diffusion barrier on K417G superalloy",

abstract = "A ceramic particle reinforced glass matrix composite coating with a novel Ni + CrAlYSiN cermet bond-coat and an AlN diffusion barrier was prepared on K417G superalloy, and its oxidation behavior at 1000 °C was investigated. The oxidation rate of the coating was significantly reduced compared with the Ni + CrAlYSiN coating, because the glass-based top-coat promoted selective oxidation of Al within the bond-coat due to the oxygen barrier effect. Furthermore, cyclic oxidation resistance of the coating was improved by the low expansion bond-coat while weakened by the microstructure degradation of the top-coat. Additionally, the AlN diffusion barrier effectively restrained interdiffusion between bond-coat and substrate.",

author = "Xin Wang and Shenglong Zhu and Zhengxian Li and Litao Chang and Qing Wu and Yusheng Zhang and Fuhui Wang",

year = "2018",

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doi = "10.1016/j.corsci.2018.10.001",

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pages = "283--294",

journal = "Corrosion Science",

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T1 - Oxidation behavior of a glass-based composite coating with a low expansion cermet bond-coat and an AlN diffusion barrier on K417G superalloy

AU - Wang, Xin

AU - Zhu, Shenglong

AU - Li, Zhengxian

AU - Chang, Litao

AU - Wu, Qing

AU - Zhang, Yusheng

AU - Wang, Fuhui

PY - 2018/12/1

Y1 - 2018/12/1

N2 - A ceramic particle reinforced glass matrix composite coating with a novel Ni + CrAlYSiN cermet bond-coat and an AlN diffusion barrier was prepared on K417G superalloy, and its oxidation behavior at 1000 °C was investigated. The oxidation rate of the coating was significantly reduced compared with the Ni + CrAlYSiN coating, because the glass-based top-coat promoted selective oxidation of Al within the bond-coat due to the oxygen barrier effect. Furthermore, cyclic oxidation resistance of the coating was improved by the low expansion bond-coat while weakened by the microstructure degradation of the top-coat. Additionally, the AlN diffusion barrier effectively restrained interdiffusion between bond-coat and substrate.

AB - A ceramic particle reinforced glass matrix composite coating with a novel Ni + CrAlYSiN cermet bond-coat and an AlN diffusion barrier was prepared on K417G superalloy, and its oxidation behavior at 1000 °C was investigated. The oxidation rate of the coating was significantly reduced compared with the Ni + CrAlYSiN coating, because the glass-based top-coat promoted selective oxidation of Al within the bond-coat due to the oxygen barrier effect. Furthermore, cyclic oxidation resistance of the coating was improved by the low expansion bond-coat while weakened by the microstructure degradation of the top-coat. Additionally, the AlN diffusion barrier effectively restrained interdiffusion between bond-coat and substrate.

U2 - 10.1016/j.corsci.2018.10.001

DO - 10.1016/j.corsci.2018.10.001

M3 - Article

SN - 0010-938X

VL - 145

SP - 283

EP - 294

JO - Corrosion Science

JF - Corrosion Science

ER -

Oxidation behavior of a glass-based composite coating with a low expansion cermet bond-coat and an AlN diffusion barrier on K417G superalloy

Abstract

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