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

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, in particular to the creation of composite materials by impregnating a porous frame with high electrical conductivity, antifriction properties, resistance in aggressive environments. The method for producing a carbon-graphite composite material includes vacuum degassing of a porous carbon-graphite workpiece in an electrolyte solution, applying a four-layer galvanic coating on it containing copper, silver and nickel layers, impregnating it with a lead matrix alloy melt under the influence of excessive pressure due to thermal expansion of the melt when heated above the liquidus temperature lead alloy, while 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 galvanic coating is sequentially applied from internal nickel, intermediate zinc and copper and outer silver layers.

EFFECT: invention improves the quality of composite materials by improving the filling of the pores of the carbon-graphite framework with the lead matrix alloy melt.

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