METHOD FOR PRODUCING CARBON-GRAPHITE COMPOSITE MATERIAL Russian patent published in 2021 - IPC C22C47/08 C22C49/02 C22C49/14 C22C101/10 B22F3/26 C25D5/10 

FIELD: metallurgy, composite materials.

SUBSTANCE: invention relates to the field of metallurgy, namely the creation of carbon-graphite composite materials with a metal matrix having 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 an electrolyte solution, applying a galvanic coating on it, containing sequentially applied inner nickel, intermediate zinc and outer copper layers, impregnating it in the impregnation chamber with a melt of a matrix copper-phosphorous alloy under the influence of excessive pressure due to the thermal expansion of the lead melt in the pressure chamber when heated 100°C above the liquidus temperature of the matrix copper-phosphorous alloy simultaneously with molten lead, and along with this, vacuum degassing is carried out in a solution of nickel electrolyte containing 140 g/l of nickel sulfate, 50 g/l of sodium sulfate, 30 g/l of magnesium sulfate, 20 g/l of dry boric acid, and the carbon-graphite billet is placed in the impregnation chamber at the temperature of the lead melt in the pressure chamber for 5-10° below the liquidus temperature of the lead alloy.

EFFECT: invention improves quality of carbon-graphite composite materials.

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