METHOD OF PROTECTING PARTS OF GAS TURBINES Russian patent published in 2024 - IPC C23C28/00 C23C14/16 C23C14/24 C23C10/48 

FIELD: turbines or turbomachines.

SUBSTANCE: invention relates to a method of protecting parts of gas turbines from heat-resistant cast nickel alloys. Plasma heat- and corrosion-resistant layer is deposited based on nickel from powdered nickel alloy PNH20K20Yu13 or based on cobalt with ratio of cobalt and nickel of 2.17, with content of the following components, wt %: chromium 18–22, aluminum 10–15, silicon 0.2–1.0, yttrium 0.1–0.50. Then, aluminum-based material is deposited by slurry method with degree of surface saturation of parts of 15–60 g/m² or by diffusion method or ion-plasma sputtering of cathode from aluminum alloy in vacuum to obtain specific weight gain on external surface of parts of 15–60 g/m². Vacuum annealing is performed. A two-layer heat- and corrosion-resistant coating with a pore-free outer aluminide layer is obtained on the surface of said parts.

EFFECT: providing application of coatings for protection against high-temperature oxidation and sulphide-oxide corrosion of parts of turbines from nickel heat-resistant alloys, at which heat resistance of the main protected material is maintained and thermal cyclic durability and heat and corrosion resistance are increased.

1 cl, 4 dwg, 2 ex