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:
Jun. 01, 1982
Filed:
Dec. 19, 1980
Yorihiro Murata, North Tonawanda, NY (US);
Kennecott Corporation, Stamford, CT (US);
Abstract
Sintered ceramic products comprised of from about 55 to about 99.5 percent by weight of silicon carbide co-sintered with from about 0.5 to about 45 percent by weight aluminum nitride containing a dispersion of free carbon in amounts between about 0.5 and about 4.0 percent by weight of the product are described. The sintered products have a bulk density of at least 75 percent of the theoretical density of silicon carbide. The products are produced by sintering, under substantially pressureless conditions, mixtures of silicon carbide, carbon, or a carbon source material, and aluminum nitride. The aluminum nitride component, in ranges of from about 3.0 to about 45 percent, may be initially mixed with the silicon carbide and carbon or carbon source material. In ranges of from about 0.5 to about 3.0 percent, the aluminum nitride component may be added to the mixture in vapor form during sintering.