METHOD OF PRODUCING HIGH-DENSITY GRAPHITE Russian patent published in 2013 - IPC C01B31/04 C04B35/532 

Abstract RU 2496714 C1

FIELD: chemistry.

SUBSTANCE: invention can be used in making high-heat areas of structures subjected to aggressive oxidative media. A graphite workpiece is subjected to vacuum embedding with high-temperature coal-tar pitch at temperature higher than the melting point of the pitch. Simultaneous saturation and carbonisation is then carried out at pressure of (80-105) MPa at temperature (700-750)°C, while maintaining said pressure and temperature for at least 4 hours and high-temperature vacuum treatment is carried out while maintaining temperature of (2100-2300)°C for at least half an hour.

EFFECT: high density and strength of the obtained material while still enabling the manufacture of large components from said material.

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RU 2 496 714 C1

Authors

Kolesnikov Sergej Anatol'Evich

Melamed Anna Leonidovna

Ostronov Boris Grigor'Evich

Petrov Anatolij Mikhajlovich

Dates

2013-10-27Published

2012-04-20Filed