FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, namely to creation of composite materials with impregnation of porous frame, having high electric conductivity, antifriction properties, resistance in aggressive media. Method of producing coal-graphite composite material includes vacuum degassing of porous coal-graphite billet, its impregnation in impregnation chamber by molten matrix alloy under effect of excessive pressure due to thermal expansion of lead melt in pressure chamber at heating by 100 °C above the liquidus temperature of the matrix alloy simultaneously with the lead melt, wherein matrix alloy is copper-phosphorous alloy, degassing is carried out before immersing porous workpiece into melt of matrix alloy, and before impregnation porous workpiece is coated with two-layer galvanic coating consisting of internal copper and outer cadmium layers.
EFFECT: technical result is improved quality of composite materials by increasing permeability of pores of graphite billet.
1 cl, 2 dwg, 1 tbl, 1 ex
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