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

Abstract RU 2688368 C1

FIELD: technological processes.

SUBSTANCE: invention relates to production of carbon-graphite composite material. Method includes vacuum degassing of porous carbon-graphite workpiece, 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 lead melt. Copper-phosphorous alloy is used as matrix alloy, degassing is performed before immersion of porous workpiece into melt of matrix alloy, and before impregnation a four-layer galvanic coating consisting of internal copper, intermediate chromium and silver and outer nickel layers is applied on the porous workpiece.

EFFECT: higher quality of composite material.

1 cl, 2 dwg, 1 tbl, 1 ex

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RU 2 688 368 C1

Authors

Gulevskij Viktor Aleksandrovich

Miroshkin Nikolaj Yurevich

Dates

2019-05-22Published

2018-03-12Filed