Effects of reactive element oxides on the isothermal oxidation of β-NiAl coatings fabricated by spark plasma sintering

Wenfu Chen; Limin He; Yi Guo; Xiao Shan; Jianghua Li; Fangwei Guo; Xiaofeng Zhao; Na Ni; Ping Xiao

doi:10.1016/j.surfcoat.2018.10.021

Effects of reactive element oxides on the isothermal oxidation of β-NiAl coatings fabricated by spark plasma sintering

Wenfu Chen, Limin He, Yi Guo, Xiao Shan, Jianghua Li, Fangwei Guo, Xiaofeng Zhao^*, Na Ni, Ping Xiao

^*Corresponding author for this work

Materials Engineering

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Abstract

The CeO₂, Y₂O₃ and HfO₂ doped β-NiAl coatings with controlled concentrations were fabricated on Hastelloy substrates using spark plasma sintering. The effects of reactive element oxide (REO) species and concentrations on the isothermal oxidation of the β-NiAl coatings were investigated. It was found that the addition of Y₂O₃ and HfO₂ improved the oxidation performance of β-NiAl coatings, but CeO₂ with high concentrations (0.5 at.%) had a detrimental effect. At low concentration (0.05 at.% and 0.1 at.%), HfO₂ was less effective in improving the oxidation resistance of β-NiAl compared with Y₂O₃ and CeO₂, while HfO₂ at higher concentration of 0.5 at.% was the most effective among the three. The effects of REO species and concentrations on the NiAl oxidation behavior were further discussed in related to the intrinsic properties of the REOs and the chemical compositions of the substrate.

Original language	English
Pages (from-to)	322-331
Number of pages	10
Journal	Surface and Coatings Technology
Volume	357
Early online date	9 Oct 2018
DOIs	https://doi.org/10.1016/j.surfcoat.2018.10.021
Publication status	Published - 15 Jan 2019

Keywords

Coatings
NiAl
Oxidation
Reactive element oxide
Spallation

Research Beacons, Institutes and Platforms

Dalton Nuclear Institute

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10.1016/j.surfcoat.2018.10.021

Effects of reactive element oxides on the isothermal oxidation of β-NiAl coatings fabricated by spark plasma sinteringAccepted author manuscript, 5.06 MBLicence: CC BY-NC-ND

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title = "Effects of reactive element oxides on the isothermal oxidation of β-NiAl coatings fabricated by spark plasma sintering",

abstract = "The CeO2, Y2O3 and HfO2 doped β-NiAl coatings with controlled concentrations were fabricated on Hastelloy substrates using spark plasma sintering. The effects of reactive element oxide (REO) species and concentrations on the isothermal oxidation of the β-NiAl coatings were investigated. It was found that the addition of Y2O3 and HfO2 improved the oxidation performance of β-NiAl coatings, but CeO2 with high concentrations (0.5 at.%) had a detrimental effect. At low concentration (0.05 at.% and 0.1 at.%), HfO2 was less effective in improving the oxidation resistance of β-NiAl compared with Y2O3 and CeO2, while HfO2 at higher concentration of 0.5 at.% was the most effective among the three. The effects of REO species and concentrations on the NiAl oxidation behavior were further discussed in related to the intrinsic properties of the REOs and the chemical compositions of the substrate.",

keywords = "Coatings, NiAl, Oxidation, Reactive element oxide, Spallation",

author = "Wenfu Chen and Limin He and Yi Guo and Xiao Shan and Jianghua Li and Fangwei Guo and Xiaofeng Zhao and Na Ni and Ping Xiao",

year = "2019",

month = jan,

day = "15",

doi = "10.1016/j.surfcoat.2018.10.021",

language = "English",

volume = "357",

pages = "322--331",

journal = "Surface and Coatings Technology",

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T1 - Effects of reactive element oxides on the isothermal oxidation of β-NiAl coatings fabricated by spark plasma sintering

AU - Chen, Wenfu

AU - He, Limin

AU - Guo, Yi

AU - Shan, Xiao

AU - Li, Jianghua

AU - Guo, Fangwei

AU - Zhao, Xiaofeng

AU - Ni, Na

AU - Xiao, Ping

PY - 2019/1/15

Y1 - 2019/1/15

N2 - The CeO2, Y2O3 and HfO2 doped β-NiAl coatings with controlled concentrations were fabricated on Hastelloy substrates using spark plasma sintering. The effects of reactive element oxide (REO) species and concentrations on the isothermal oxidation of the β-NiAl coatings were investigated. It was found that the addition of Y2O3 and HfO2 improved the oxidation performance of β-NiAl coatings, but CeO2 with high concentrations (0.5 at.%) had a detrimental effect. At low concentration (0.05 at.% and 0.1 at.%), HfO2 was less effective in improving the oxidation resistance of β-NiAl compared with Y2O3 and CeO2, while HfO2 at higher concentration of 0.5 at.% was the most effective among the three. The effects of REO species and concentrations on the NiAl oxidation behavior were further discussed in related to the intrinsic properties of the REOs and the chemical compositions of the substrate.

AB - The CeO2, Y2O3 and HfO2 doped β-NiAl coatings with controlled concentrations were fabricated on Hastelloy substrates using spark plasma sintering. The effects of reactive element oxide (REO) species and concentrations on the isothermal oxidation of the β-NiAl coatings were investigated. It was found that the addition of Y2O3 and HfO2 improved the oxidation performance of β-NiAl coatings, but CeO2 with high concentrations (0.5 at.%) had a detrimental effect. At low concentration (0.05 at.% and 0.1 at.%), HfO2 was less effective in improving the oxidation resistance of β-NiAl compared with Y2O3 and CeO2, while HfO2 at higher concentration of 0.5 at.% was the most effective among the three. The effects of REO species and concentrations on the NiAl oxidation behavior were further discussed in related to the intrinsic properties of the REOs and the chemical compositions of the substrate.

KW - Coatings

KW - NiAl

KW - Oxidation

KW - Reactive element oxide

KW - Spallation

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U2 - 10.1016/j.surfcoat.2018.10.021

DO - 10.1016/j.surfcoat.2018.10.021

M3 - Article

AN - SCOPUS:85054786499

SN - 0257-8972

VL - 357

SP - 322

EP - 331

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Effects of reactive element oxides on the isothermal oxidation of β-NiAl coatings fabricated by spark plasma sintering

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Keywords

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