METHOD OF PROTECTION OF GAS TURBINE BLADES Russian patent published in 2002 - IPC

FIELD: mechanical engineering; aviation and power turbine manufacture; protection of gas turbine blades, blades with transpiration cooling inclusive against high-temperature oxidation. SUBSTANCE: method includes deposition in vacuum of first layer of condensed coat on external surface of blade vane; condensed coat is made from nickel containing, mas.%: chromium, 12-20; aluminum, 6-12; tantalum, 1.5-8; tungsten, 0.3-4; rhenium, 0.3-2.5; yttrium, 0.1-0.5; then deposition of second aluminum-based layer takes place which is followed by vacuum annealing. EFFECT: enhanced thermal stability; increase of working temperature of diffusion aluminum coats by 50 to 70 C; enhanced heat resistance; increased service life of coats. 3 tbl