THERMOEROSIONAL COATING FOR CARBON-CARBONIC COMPOSITE MATERIALS Russian patent published in 2015 - IPC C04B41/89 C04B35/84 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely to thermal-protective coatings on work blades and guide vanes of power turbines, gas turbines of aviation engines, and augmenter of aviation engines made out of carbon-carbonic composite material. Invention suggest formation on the protected element out of carbon-carbonic composite material of the transient dampening layer comprising two sub-layers: SiC and Al₂O₃, thickness 10-150 mcm, intermediate layer out of borosilicate glass with thickness 70-100 mcm, and protective layer Al₂O₃ with thickness 100-150 mcm and porosity 20-30%.

EFFECT: increased adhesion strength of the coating with carbon-carbonic composite material, sealing of the occurred cracks by borosilicate glass, reduced residual and operation stresses in the protective coating, increased thermal impacts resistance.

2 cl, 2 tbl, 2 dwg