| 摘要 |
protective coats for components subjected to erosion-corrosion action. SUBSTANCE: production article subjected to erosion and corrosion action has backing made from super-strength nickel- or cobalt-base alloy, heat- insulating layer located on backing and protective coat located on heat-insulating layer; protective coat is more pliable as compared with heat-insulating layer; backing, heat-insulating layer and protective coat form blade composite member of gas turbine including blade part and holding part; blade part which is prone to action of gas flowing along article during operation has leading and trailing edges and convex upper surface and concave lower surface; both surfaces connect leading edge with trailing one protective coat is silicide coat mainly consisting of MoSi2; heat-insulating layer includes ceramic having columnar granular structure; binding layer consisting of intermetallic compounds and McrAlY alloys may be laid between heat-insulating layer and backing. Method of protection of article against corrosion and erosion action includes application of new protective coat on damaged coat located on heat-insulating layer; new protective coat possesses higher pliability as compared with preset magnitude. EFFECT: enhanced efficiency of corrosion and erosion protection, as well as enhanced protection against excessive thermal loads. 13 cl, 4 dwg |
