PROCEDURE FOR APPLICATION OF HEAT PROTECTING WEAR RESISTANT COATING ON ITEMS OF IRON AND STEEL Russian patent published in 2011 - IPC C23C4/04 C23C30/00 

FIELD: metallurgy.

SUBSTANCE: procedure consists in plasma sputtering sub-layer of composition Co-Cr-Al-Y and in successive sputtering cermet composition of mechanical powder mixture of composition 20-50 wt % of nichrome, 50-20 wt % of zirconium dioxide with stabilising additive, 20 wt % of carbide of chromium, 10 wt % of carbide of tungsten. Also, as stabilising additive in powder of zirconium dioxide there is used yttrium oxide contents of which is 4-7 wt %.

EFFECT: raised resistance of coating to wear at friction, hardness of coating, heat resistance and adhesion of coating to alloy of base.

5 dwg, 1 ex