초록 ▼

A method of producing a silicon carbide sintered body is disclosed. The sintered body having a density of at least 2.4 g/cm3 is produced by preparing a mixture consisting mainly of silicon carbide with an average particle size of not more than 3.0 microns and a temporary binder, shaping the mixture

A method of producing a silicon carbide sintered body is disclosed. The sintered body having a density of at least 2.4 g/cm3 is produced by preparing a mixture consisting mainly of silicon carbide with an average particle size of not more than 3.0 microns and a temporary binder, shaping the mixture into a green body and sintering the green body at a temperature of 1,750°C.-2,100°C. Before the sintering, silicon carbide is contacted with either hydrofluoric acid or anhydrous hydrofluoric acid and an atmosphere is held in a non-oxidizing state after the contact treatment up to the completion of the sintering.

대표청구항 ▼

A method of producing a silicon carbide sintered body comprising the steps of: (a) preparing a mixture consisting mainly of silicon carbide having an average particle size of not more than 3 microns and 0.5-10.0 parts by weight as a solid content of a temporary binder based on 100 parts by weight of

A method of producing a silicon carbide sintered body comprising the steps of: (a) preparing a mixture consisting mainly of silicon carbide having an average particle size of not more than 3 microns and 0.5-10.0 parts by weight as a solid content of a temporary binder based on 100 parts by weight of silicon carbide, (b) shaping the mixture into a green body, and (c) sintering the green body at a temperature of 1,750°C.-2,100°C. to produce a sintered body having a density of at least 2.4 g/cm3; said silicon carbide being contacted with either hydrofluoric acid or anhydrous hydrofluoric acid at latest before the step (c) to remove silicon dioxide film contained thereon and maintained in a non-oxidizing atmosphere after the contact treatment up to the completion of the sintering to prevent formation of silicon dioxide film thereon.