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Oxidation Behaviour of Ieabct Deposited NiCoCrAlY-ZrO2·y2O3 Coating

Published online by Cambridge University Press:  25 February 2011

N. K. Huang
Affiliation:
Institute of Nuclear Science and Technology, Sichuan University Chengdu610064, P. R. China
D. Z. Wang
Affiliation:
Institute of Nuclear Science and Technology, Sichuan University Chengdu610064, P. R. China
Z. R. Feng
Affiliation:
Institute of Nuclear Science and Technology, Sichuan University Chengdu610064, P. R. China
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Abstract

The oxidation behaviour of NiCoCrAlY-ZrO2·y2O3 coatings produced by using an ion-electron-atom beams combination technique (IEABCT) was studied after air exposure at 1100 °C for up to 300 hours. It was found that pores were dispersed in the coating, especially in the interface between coating and substrate, and no spallation or separation of the ceramic layer from the metallic bond layer were observed. The composition and morphology of the coatings before and after oxidation exposure in air at 1100 °C for 300 hours were examined by microscopy and electron microprobe analysis (EMPA).

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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