METHOD FOR PRODUCING CARBON-GRAPHITE COMPOSITE MATERIAL Russian patent published in 2021 - IPC B22F3/26 C22C47/12 C22C49/02 C22C49/14 C22C101/10 C25D5/10 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, namely, to the creation of composite materials by impregnation of a carbon-graphite porous frame, which have high electrical conductivity, antifriction properties, and resistance in aggressive environments. The method for producing a carbon-graphite composite material includes vacuum degassing of a porous carbon-graphite billet in an electrolyte solution containing 40 g/l of copper sulphate, 40 g/l of stannic sulphate, 8 g/l of phenol, 70 g/l of sulfuric acid, 0.0005 g/l of thiourea, applying a layer of electroplating consisting of 80% copper and 20% tin to the porous billet, placing the coated billet in an impregnation chamber 2/3 filled with melt lead alloy, impregnation under the influence of excessive pressure due to the heat and thermal expansion of the melt when heated above the liquidus temperature of the lead alloy.

EFFECT: higher quality of composite materials due to the maximum filling of the pores of the carbon-graphite frame.

1 cl, 1 tbl, 1 ex