Oxidation protection of enamel coated Ni based superalloys: Microstructure and interfacial reaction

Gaosheng Yan; Wenshan Yu; Shen Shengping

doi:10.1016/j.corsci.2020.108760

Oxidation protection of enamel coated Ni based superalloys: Microstructure and interfacial reaction

Gaosheng Yan
, Wenshan Yu
, Shen Shengping

School of Aerospace Engineering

Xi'an Jiaotong University

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

34 Scopus citations

Abstract

We study the oxidation of SiO₂-Al₂O₃-CaO-BaO-MgO based enamel coated Ni based superalloy at 900°C and find that the enamel coatings are highly capable of protecting the Ni based superalloy from oxidation. During the oxidation, the complicated composition crystals precipitated in enamel lead to two linear variation stages of oxidation weight gain. Moreover, the increased roughness of the superalloy interface due to oxidative attack and the immersion of the enamel coating in superalloy should increase the interface bonding strength. Finally, oxidations of Al, Ti and Cr from superalloy dominates the interfacial reactions.

Original language	English
Article number	108760
Journal	Corrosion Science
Volume	173
DOIs	https://doi.org/10.1016/j.corsci.2020.108760
State	Published - 15 Aug 2020

Keywords

Enamel coating
High temperature oxidation
Interfacial reaction
Microstructure
Ni based superalloys
evolution

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10.1016/j.corsci.2020.108760

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title = "Oxidation protection of enamel coated Ni based superalloys: Microstructure and interfacial reaction",

abstract = "We study the oxidation of SiO2-Al2O3-CaO-BaO-MgO based enamel coated Ni based superalloy at 900°C and find that the enamel coatings are highly capable of protecting the Ni based superalloy from oxidation. During the oxidation, the complicated composition crystals precipitated in enamel lead to two linear variation stages of oxidation weight gain. Moreover, the increased roughness of the superalloy interface due to oxidative attack and the immersion of the enamel coating in superalloy should increase the interface bonding strength. Finally, oxidations of Al, Ti and Cr from superalloy dominates the interfacial reactions.",

keywords = "Enamel coating, High temperature oxidation, Interfacial reaction, Microstructure, Ni based superalloys, evolution",

author = "Gaosheng Yan and Wenshan Yu and Shen Shengping",

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year = "2020",

month = aug,

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doi = "10.1016/j.corsci.2020.108760",

language = "英语",

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TY - JOUR

T1 - Oxidation protection of enamel coated Ni based superalloys

T2 - Microstructure and interfacial reaction

AU - Yan, Gaosheng

AU - Yu, Wenshan

AU - Shengping, Shen

PY - 2020/8/15

Y1 - 2020/8/15

N2 - We study the oxidation of SiO2-Al2O3-CaO-BaO-MgO based enamel coated Ni based superalloy at 900°C and find that the enamel coatings are highly capable of protecting the Ni based superalloy from oxidation. During the oxidation, the complicated composition crystals precipitated in enamel lead to two linear variation stages of oxidation weight gain. Moreover, the increased roughness of the superalloy interface due to oxidative attack and the immersion of the enamel coating in superalloy should increase the interface bonding strength. Finally, oxidations of Al, Ti and Cr from superalloy dominates the interfacial reactions.

AB - We study the oxidation of SiO2-Al2O3-CaO-BaO-MgO based enamel coated Ni based superalloy at 900°C and find that the enamel coatings are highly capable of protecting the Ni based superalloy from oxidation. During the oxidation, the complicated composition crystals precipitated in enamel lead to two linear variation stages of oxidation weight gain. Moreover, the increased roughness of the superalloy interface due to oxidative attack and the immersion of the enamel coating in superalloy should increase the interface bonding strength. Finally, oxidations of Al, Ti and Cr from superalloy dominates the interfacial reactions.

KW - Enamel coating

KW - High temperature oxidation

KW - Interfacial reaction

KW - Microstructure

KW - Ni based superalloys

KW - evolution

UR - https://www.scopus.com/pages/publications/85085366769

U2 - 10.1016/j.corsci.2020.108760

DO - 10.1016/j.corsci.2020.108760

M3 - 文章

AN - SCOPUS:85085366769

SN - 0010-938X

VL - 173

JO - Corrosion Science

JF - Corrosion Science

M1 - 108760

ER -

Oxidation protection of enamel coated Ni based superalloys: Microstructure and interfacial reaction

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Keywords

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