METHOD FOR INCREASING PERMEABILITY OF PORES OF A CARBON-GRAPHITE WORKPIECE Russian patent published in 2019 - IPC B22F3/26 C22C1/08 B60L5/00 

FIELD: technological processes.

SUBSTANCE: invention relates to production of carbon-graphite composite material. Method includes vacuum degassing of porous carbon-graphite workpiece, its impregnation with melt of matrix aluminum alloy under action of excessive pressure due to thermal expansion of melt at heating above temperature of liquidus of aluminum alloy. Degassing is performed before immersion of porous workpiece into melt of matrix alloy, and before impregnation porous workpiece is covered with two-layer galvanic coating consisting of internal copper and outer chromium layers.

EFFECT: higher quality of composite material.

1 cl, 2 dwg, 1 tbl, 1 ex