Microstructure changes during MCrAlY bond coats oxidation (review)

Movenko D.A., Medvedev P.N.
Movenko D.A., Medvedev P.N. Microstructure changes during MCrAlY bond coats oxidation (review) // Proceedings of VIAM. 2019. No. 10. DOI: 10.18577/2307-6046-2019-0-10-50-60. URL: https://test.viam.ru/en/journal/2019/10/5
Keywords
TBC, bond coat, TGO, isothermal oxidation, microstructure evolution, interdiffusion.
Abstract

The state of the question of structure changing of MCrAlY bond coats during isothermal oxidation is studied. The influence of coating methods on their structure during long-term oxidation is shown. Criteria for assessing the lifetime of thermal barrier coatings with MCrAlY bond coats are shown. The influence of the composition and morphology of thermally grown oxide on the oxidation intensity of the bond coat and its adhesion to the ceramic layer of the thermal barrier coating are presented.

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