METHOD OF PROTECTION OF STEEL MACHINE COMPONENTS FROM SALT ATTACK Russian patent published in 2001 - IPC

FIELD: chemical industry. SUBSTANCE: method comprises successive deposition onto blade surface in vacuum of first condensed coating layer with thickness of 6-25 mcm from nickel- based alloy comprising, wt %: chromium, 16-28; cobalt, 16-30; aluminium 8-13.5; yttrium, 0.05-0.6, and nickel, the balance, subsequent deposition of second coating layer with thickness of 4-12 mcm from aluminium-based alloy comprising, wt %: silicon 4-12; cobalt 5-15; yttrium, 0.1-0.6; and aluminium- the balance, and heat treatment of component coated in the air or in vacuum at 580-620 C for 6-8 hours, thus making it possible to increase resistance of steel machine components to salt attack at temperatures up to 700 C and to reduce working hours to prepare protective coating. EFFECT: more efficient protection method. 3 cl, 1 ex, 2 tbl