Main mechanisms of destruction of the ceramic layer of thermal barrier coatings (review)

Budinovskiy S.A., Stekhov P.A., Doronin O.N., Artemenko N.I.
UDC
678.84
DOI
10.18577/2307-6046-2019-0-2-105-112
Article PDF (Russian) (862.74 KB)
How to cite
Budinovskiy S.A., Stekhov P.A., Doronin O.N., Artemenko N.I. Main mechanisms of destruction of the ceramic layer of thermal barrier coatings (review) // Proceedings of VIAM. 2019. No. 2. DOI: 10.18577/2307-6046-2019-0-2-105-112. URL: https://test.viam.ru/en/journal/2019/2/11
Keywords
YSZ, nickel alloys, ceramic layer, thermal barrier coating (TBC), thermal growing oxide (TGO), thermal conductivity coefficient.
Abstract

The article discusses various mechanisms of destruction and methods for assessing the performance of the ceramic layer of heat-shielding coating for parts of gas-turbine engines (GTE). The analysis showed that the main cause of spallation of the ceramic layer of the heat-shielding coating, during normal use of the product, is the formation of a thermal growing oxide, which is formed during the operation of the product and grows throughout the life of the resource, and has a critical value at which the ceramic layer is cleaving.

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