FIELD: protective coatings. SUBSTANCE: alloy piece is subjected to plasma spraying in vacuum at 900 C for 2-3 h to produce first layer containing (in wt %) chromium, 28-30; aluminium, 6-8; tantalum, 8- 10; yttrium. 0.8-1.5. Further, in the process of chromocalorizing, second layer is applied by diffusion technique with powder mixture containing (in wt %) chromium, 35; aluminium, 15; ammonium chloride, 0.4; and alumina, the balance, at 1080 C for 6 h. Thus obtained coating is hardened in vacuum at 1160-1200 C for 1-2 h with subsequent drawing in vacuum at 900-1000 C for 1-2 h. EFFECT: improved procedure. 5 dwg, 2 tbl
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