The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2008
Filed:
Oct. 15, 2002
Fumio Odaka, Niiza, JP;
Fumio Odaka, Niiza, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A method of producing a sintered silicon carbide using a reaction sintering method, comprising: (1) dissolving and dispersing a silicon carbide powder in a solvent to produce a mixed powder slurry, (2) flowing the resulted mixed powder into a mold and drying it to obtain a green body, (3) temporarily sintering the green body in one of a vacuum atmosphere or inert gas atmosphere at 1200 to 1900° C. to obtain a temporarily sintered first body, (4) impregnating the resulted temporarily sintered first body with a phenol resin as a carbon source, (5) temporarily sintering the resulted carbon source-impregnated temporarily sintered first body in one of a vacuum atmosphere or inert gas atmosphere at 900 to 1400° C. to obtain a temporarily sintered second body, (6) impregnating the resulted temporarily sintered second body with a melted metal silicon by a capillary phenomenon, and reacting free carbon in the above-mentioned temporarily sintered second body with the silicon sucked into the above-mentioned temporarily sintered second body by a capillary phenomenon to obtain a silicon carbide body.