초록 ▼

A silicon carbide material in the form of fibers, sheets or three-dimensionally structured articles useful as a reinforcing material and heat-insulating material, is produced by reacting an activated porous carbon material in the form of, for example, fibers, sheets or three-dimensionally structured

A silicon carbide material in the form of fibers, sheets or three-dimensionally structured articles useful as a reinforcing material and heat-insulating material, is produced by reacting an activated porous carbon material in the form of, for example, fibers, sheets or three-dimensionally structured articles, and having a specific surface area of 100 to 2500 m2/g, with silicon monoxide gas at a temperature of 800°C. to 2000°C. and then heat-treating the resultant silicon carbide material in a non-oxidative gas atmosphere containing nitrogen and substantially no oxygen at a temperature of 800°C. to 2000°C.

대표청구항 ▼

A process for producing a silicon carbide material comprising the steps of: reacting a carbon material consisting essentially of activated porous carbon fibers, said fibers having a specific surface area of 100 to 2500 m2/g, with a silicon monoxide gas at a temperature of 800°C. to 2000°C., and heat

A process for producing a silicon carbide material comprising the steps of: reacting a carbon material consisting essentially of activated porous carbon fibers, said fibers having a specific surface area of 100 to 2500 m2/g, with a silicon monoxide gas at a temperature of 800°C. to 2000°C., and heat-treating the resultant porous silicon carbide material in a non-oxidative gas atmosphere consisting essentially of nitrogen or ammonia and substantially no oxygen at a temperature of 800°C. to 2000°C.