Study of an effect of thickness of the barrier coating layer on properties of compositions of high-temperature alloys VZhM1 and ZhS36 with heat-resistant coatings

Gayamov A.M., Budinovskiy S.A.
UDC
629.7.023.224
DOI
10.18577/2307-6046-2014-0-9-3-3
Article PDF (Russian) (966.67 KB)
How to cite
Gayamov A.M., Budinovskiy S.A. Study of an effect of thickness of the barrier coating layer on properties of compositions of high-temperature alloys VZhM1 and ZhS36 with heat-resistant coatings // Proceedings of VIAM. 2014. No. 9. DOI: 10.18577/2307-6046-2014-0-9-3-3. URL: https://test.viam.ru/en/journal/2014/9/3
Abstract

An influence of the thickness of the composite barrier layer [SDP-2+CrC] on heat resistance and kinetics of changes in elemental compositions of VZHM1 and ZHS36 superalloys with heat-resistant coating. Microstructural investigations of «nickel super-alloy–coating» compositions were carried out after the heat resistance test. It has been established that an increase in thickness of the barrier layer reduces significantly diffusion rate of elements across the «nickel superalloy–coating» interface, but the use of barrier layers with the thickness of 20 microns or more leads to a premature detachment of the coating from the substrate. The obtained results allow us to recommend the use of [SDP-2+CrC] barrier layer of 10–15 microns in thickness as a part of the heat-resistant coating.

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