METHOD OF APPLYING COATINGS ON ALLOYS Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: method involves sequential applying nickel-base coating layer and aluminum-base coating layer and thermal processing at temperature T equal to or less than 1.05 Tq, where Tq is quenching temperature of alloys, onto which coatings are applied. Nickel-base coating alloy comprises, %: chromium 2-30; aluminum 2-15; tantalum 0.2-20; tungsten 0.5-10; hafnium 0.2-6; yttrium 0.001-5; silicon 0.1-5; nickel the balance up to 100%. Method may be used for increasing service life of turbine blades for gas turbine engines or stationary gas turbines. EFFECT: increased fire resistance of coatings to gas corrosion and improved heat resistance of coatings. 2 dwg