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. 28, 1988
Filed:
Mar. 27, 1986
Applicant:
Inventor:
Akira Saito, Kokubu, JP;
Assignee:
Kyocera Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 88 ; 252516 ; 501 89 ; 501 90 ; 501 91 ; 501 92 ;
Abstract
A silicon carbide sintered body suitable for electrical discharge machining and a method for its manufacture are disclosed. The silicon carbide sintered body comprises 0.5-5% by weight of AlN, 0.5-3% by weight (as Ti) of a Ti compound, 0.5-8% by weight of C, 0-3% by weight (as B) of B or a B compound, and a remainder of substantially SiC. It has a volume resistivity at room temperature of not greater than 10 ohm-cm and a density of at least 90% of the theoretical density of SiC. The manufacturing method comprises shaping a mixture of the raw materials and sintering the shaped green body in a non-oxidizing atmosphere at a temperature of 2000.degree.-2300.degree. C.