METHOD FOR PRODUCING CARBON-GRAPHITE COMPOSITE MATERIAL Russian patent published in 2021 - IPC B22F3/26 C22C1/08 

FIELD: metallurgy, composite materials in particular.

SUBSTANCE: invention relates to the field of metallurgy, namely, to a method for producing a carbon-graphite composite material with high electrical conductivity, anti-friction 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 a solution of copper electrolyte, applying a two-layer electroplated coating containing an inner copper layer, placing the carbon-graphite billet with an electroplated coating in the impregnation chamber, and impregnating with the antimony matrix alloy melt under the influence of excessive pressure due to thermal expansion of the lead melt in the pressure chamber when heated 100°C above the liquidus temperature of the matrix alloy simultaneously with the lead melt. The outer layer of the electroplated coating is made of lead deposited by electrolysis from an electrolyte containing 200 g/l of borofluoride lead, 50 g / l of hydroborofluoric acid and 1.0 g/l of leather glue, and the carbon-graphite billet is placed in the impregnation chamber at the temperature of the lead melt in the pressure chamber at 5-10°С lower than the temperature liquidus of the lead alloy.

EFFECT: the technical result is the improved quality of composite materials.

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