PROCEDURE FOR APPLICATION OF HEAT PROTECTING COATING Russian patent published in 2011 - IPC C23C28/00 C23C14/06 

FIELD: machine building.

SUBSTANCE: procedure consists in forming under-layer by successive application of heat resistant, transition and external ceramic layers with following diffusion annealing. Also, composition of the transition layer consists of material mixture of the ceramic layer and constituents of the heat resistant alloy, at first annealing and formation of a liquid fusible phase facilitating wetting ceramic constituent of the transitional layer, and further forming a refractory heat resistant chemical compound. Transition and heat-protection layers are applied by the gas-thermal method. As applied material for the transitional layer there is used a powder mixture consisting of: material of the ceramic layer from 1 to 99 %; constituents of a heat resistant alloy - the rest, while for heat protection layer - ZrO₂-Y₂O₃. Before application of the heat resistant layer surface of a blade is ion-plasma treated with ions of Nb, Pt, Yb, Y, La, Hf Cr, Si or their combination. Ion implantation is carried out at ion power from 0.2 keV to 30 keV and dose of implantation of ions from 10¹⁰ to 5·10²⁰ ion/cm².

EFFECT: upgraded properties of coating.

22 cl, 3 tbl