METHOD OF PRODUCING CARBON-GRAPHITE COMPOSITE MATERIAL

摘要

FIELD: technological processes.;SUBSTANCE: invention relates to production of carbon-graphite composite material having high electrical conductivity, antifriction properties and resistance to aggressive media. Method includes vacuum degassing of porous workpiece in electrolyte solution, coating of porous billet with galvanic nickel coating, its impregnation with melt of matrix copper-phosphorous alloy and under effect of excessive pressure due to thermal expansion of copper-phosphorous alloy melt at heating. Vacuum degassing of the porous workpiece is carried out in a solution of nickel electrolyte, galvanic nickel coating is deposited on the carbon-graphite frame of the workpiece, and then the workpiece is aluminized in molten aluminum alloy. Impregnation is carried out at heating at 350 °C above the aluminum alloy recrystallisation temperature.;EFFECT: higher efficiency and quality of composite materials.;1 cl, 2 dwg, 1 tbl, 1 ex