METHOD FOR PRODUCING CARBON-GRAPHITE COMPOSITE MATERIAL Russian patent published in 2021 - IPC C22C47/12 C22C49/06 C22C101/10 B22F3/26 C25D5/12 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, namely to the creation of composite materials by impregnating a porous frame and can be used for the manufacture of current collectors, pantograph inserts, electric brushes, seals, etc. The method for producing a carbon-graphite composite material includes vacuum degassing of a porous carbon-graphite workpiece in an electrolyte solution, applying a galvanic coating on it and impregnating the porous workpiece with a melt of an aluminum matrix alloy under the influence of excess pressure due to thermal expansion of the melt when heated above the liquidus temperature of the aluminum alloy, while vacuum degassing is carried out in a nickel electrolyte solution 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, made of inner nickel, intermediate zinc and copper and outer silver layers.

EFFECT: composite materials quality improvement.

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