HEAT RESISTANT COATING AND PROCEDURE FOR ITS FABRICATION Russian patent published in 2011 - IPC C23C28/00 C23C14/02 C23C14/22 

FIELD: machine building.

SUBSTANCE: procedure consists in generation of metal sub-layer of heat resistant alloy, transition metal ceramic layer and external ceramic layer of ZrO₂, stabilised with Y₂O₃ on protected surface of blade. First there is applied a metal sub-layer. A layer of high-temperature solder is applied on the sub-layer, and the ceramic layer is applied on the layer of solder. Further, there is carried out diffusion annealing at temperature facilitating production of liquid phase of sub-layer metal. There is formed transition metal-ceramic layer due to wetting ceramic layer with metal of a lower high temperature solder at depth equal to thickness of the transition layer.

EFFECT: increased operational hardness of cohesion at boundary of transition layer-external ceramic layer at simultaneous raise of durability and cyclic strength of parts with protective coating.

26 cl, 3 tbl