POWDER MATERIAL FOR GAS-THERMAL COATINGS Russian patent published in 2002 - IPC

FIELD: powder metallurgy. SUBSTANCE: powder material comprises mixture of self-fluxing cobalt-based die-casting alloy and 25-50 wt% of high melting temperature additive used in the form of particles having high melting temperature core and metal enclosure, with components being used in the following ratio, wt%: high melting temperature core 64-73; metal enclosure 27-36. High melting temperature core comprises chromium boride-diboride, aluminum dodecaboride and aluminum oxide, said components being used in the following ratio, wt%: chromium boride-diboride 10-36; aluminum dodecaboride 11-22; aluminum oxide the balance (up to 100%). Metal enclosure may be made from cobalt. Said composition allows abrasion resistance of coating to be increased by 12.7% as compared to prototype, fire resistance to be increased by 1.2-1.43 times and temperature to be increased to 1,300 C. Coating may be applied onto parts operating under impact load, abrasion and increased temperature conditions. EFFECT: increased efficiency and improved physico-mechanical properties of parts using such coating. 2 cl, 2 tbl