METHOD OF PRODUCING CARBON-GRAPHITE COMPOSITE MATERIAL

摘要

FIELD: technological processes.;SUBSTANCE: invention relates to carbon-graphite composite materials having high electrical conductivity, antifriction properties and resistance to aggressive media. Method includes a vacuum degassing the porous preform in an electrolyte solution, coating the porous preform electroplated nickel coating, impregnating its molten matrix alloy lead under the influence of excess pressure due to thermal expansion of the lead alloy melt on 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 while heating at 200 °C above the aluminum alloy recrystallisation temperature.;EFFECT: higher efficiency and quality of composite materials.;1 cl, 2 dwg, 1 tbl, 1 ex