FIELD: metallurgy.
SUBSTANCE: invention relates to coating parts from heat-resistant alloy and can be used in production of parts of gas turbine, in particular turbine blades or heat shields. Multilayer thermoemissive protective coating for part from heat-resistant alloy consists of two or more layers of zirconium dioxide separated with heat-resistant metal layers, wherein surface of upper layer of zirconium dioxide is modified with ions of alkali or alkali-earth metal with formation of sections with work function of electrons below operation of electrons of other surface.
EFFECT: higher reliability and durability of protective coatings of parts from heat-resistant steels from thermal and mechanical action from aggressive high-temperature media moving relative to protected parts from heat-resistant steels with high speeds.
1 cl, 1 dwg, 1 ex
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