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

FIELD: various technological processes.

SUBSTANCE: invention relates to protection of gas turbine blades or gas turbine nozzle assembly from heat-resistant cast nickel alloy. Plasma coating made of an intermetallic nickel alloy with an aluminium content of at least 20 wt.% is carried out sequentially on the outer surface of the airfoil of the gas turbine blades or the nozzle apparatus of the gas turbine, aluminium-based material is deposited and vacuum annealing is performed. In the process of vacuum annealing, a two-layer heat-resistant coating is formed, which contains an external porous aluminide layer and an internal non-porous layer with aluminium content of not less than 30 wt.%.

EFFECT: providing protection against high-temperature oxidation of outer surface of said blade airfoil, at which heat resistance of the main protected material is maintained and the level of thermal cyclic durability and heat resistance is increased.

5 cl, 6 dwg, 1 ex