Structure and properties of multilayer coatings based on CoCrAlY/Al2O3 obtained by detonation spraying
Abstract
Ceramic coatings are used to protect against high-temperature oxidation of metal products. The efficiency of the technology of detonation spraying of two-layer coatings of aluminum oxide ( Al2O3 ) and a heat-resistant alloy (CoCrAlY) on the surface of a sample made of steel 12X18H10T was studied. A multi-chamber detonation unit was used in the work, providing high speed (up to 1000 m/s) and a 60–80% utilization rate of the sprayed material. We used an oxygen-neutral combustible mixture based on propane-butane. The coating material has a smooth gradient of properties from ceramic to sample substrate The complex of the obtained structural and physical-mechanical properties of the coating material makes it possible to predict its high performance under conditions of high-temperature oxidation.
Keywords
About the Authors
B. K. RakhadilovKazakhstan
Ust-Kamenogorsk
Yu. N. Tyurin
Ukraine
Kiev
O. V. Kolisnichenko
Ukraine
Kiev
D. N. Kakimzhanov
Kazakhstan
Ust-Kamenogorsk
L. G. Zhurerova
Kazakhstan
Ust-Kamenogorsk
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Review
For citations:
Rakhadilov B.K., Tyurin Yu.N., Kolisnichenko O.V., Kakimzhanov D.N., Zhurerova L.G. Structure and properties of multilayer coatings based on CoCrAlY/Al2O3 obtained by detonation spraying. Eurasian Journal of Physics and Functional Materials. 2022;6(3):234-243. https://doi.org/10.32523/ejpfm.2022060308