Modern thermal barrier coatings obtained by electron-beam physical vapor deposition (review)

Kashin D.S., Stekhov P.A.
UDC
666.7
DOI
10.18577/2307-6046-2018-0-2-10-10
Article PDF (Russian) (622.3 KB)
How to cite
Kashin D.S., Stekhov P.A. Modern thermal barrier coatings obtained by electron-beam physical vapor deposition (review) // Proceedings of VIAM. 2018. No. 2. DOI: 10.18577/2307-6046-2018-0-2-10-10. URL: https://test.viam.ru/en/journal/2018/2/10
Keywords
YSZ, nickel alloys, ceramic layer, thermal barrier coating (TBC), thermal conductivity coefficient.
Abstract

Different compositions and technologies for obtaining heat-shielding coatings for gas turbine engine parts (GTE) are considered in the article. The analysis showed that in order to increase the working temperature of the ceramic layer of heat-shielding coating, the best method is to change the chemical composition of the ceramic by introducing an additional amount of rare-earth alloying elements. This provides the possibility of obtaining a certain level of the thermal coefficient of linear expansion, which leads to an increase in the operating time of the cooled GTE part before the destruction of the ceramic layer of the TBC.

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