Three surface modification methods and their effects on the isothermal oxidation behavior of the EB-PVD NiAl coating

A β-NiAl coating, deposited by electron-beam physical vapour deposition (EB-PVD), and followed by post-treatments, was used as the oxidation resistant coating. Isothermal oxidation test was conducted at 1100 °C to study the influence of post-treatments on the oxidation rate of the coating. The oxida...

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Bibliographic Details
Published in:Surface & coatings technology 2007-02, Vol.201 (9), p.5161-5164
Main Authors: Li, Hefei, Sun, Lidong, Hesnawi.A, Zhou, Zhaohui, Gong, Shengkai
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion environments
Exact sciences and technology
Isothermal oxidation
Metals. Metallurgy
NiAl bond coat
Nonmetallic coatings
Oxidation resistance
Production techniques
Surface treatment
Thermal barrier coatings
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Summary:A β-NiAl coating, deposited by electron-beam physical vapour deposition (EB-PVD), and followed by post-treatments, was used as the oxidation resistant coating. Isothermal oxidation test was conducted at 1100 °C to study the influence of post-treatments on the oxidation rate of the coating. The oxidation resistance of the coated specimens was improved by approximately twice as compared to the uncoated specimen. This indicates that this kind of coating could be exploited as the protective coating used for high temperature oxidation resistance.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2006.07.218