POWDER MATERIAL FOR GAS-THERMAL SPRAYING OF COATINGS Russian patent published in 2017 - IPC C23C24/00 B82B1/00 B22F9/00 

FIELD: metallurgy.

SUBSTANCE: invention can be used to protect the parts of the hot gas path of aircraft gas turbine engines (GTE), land based gas turbine units (GTU) and rocket engines (RE) against high temperatures, erosion and corrosion. The powder material has the general formula A_XB_YC_Z (A=Nd, Sm, Gd, Dy, Y or mixtures thereof, B=Zr, Hf or mixtures thereof, C=O, 1.5⋅X+2⋅Y = 6.0…8.0; X:Y = 0.80…1.25, the particle size of the powder is 5…150 mcm, the bulk density of the powder is in the range 0.5…3.5 g/cm³, and the size of the crystallites (coherent scattering regions) is 1…300 nm. The powder material may also contain oxides of the following elements: SiO₂ - up to 0.05 wt %, CaO - up to 0.1 wt %, MgO - up to 0.1 wt %, Fe₂O₃ - up to 0.1 wt %, Al₂O₃ - up to 0.1 wt % and TiO₂ - up to 0.8 wt % or a mixture thereof.

EFFECT: increasing resistance of thermal protection coatings to high temperatures, achieving a heat-shielding effect on the surface of the part.

10 cl, 1 tbl