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.
5 tbl
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Authors
Dates
2013-10-27—Published
2012-04-20—Filed