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:
Jul. 07, 1992
Filed:
Apr. 10, 1989
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
Silicon oxynitride sintered body is obtained by sintering a base starting material mixture comprising silicon oxynitride component and a solution of at least one alkoxide selected from alkoxides of at least one element selected from the group consisting of Al, Sc, Y and rare-earth elements. Fiber-reinforced ceramic sintered body is obtained by sintering the base starting material mixture further inclusing 5-40% by weight of SiC whiskers and/or .beta.-Si.sub.3 N.sub.4 whiskers, wherein alkoxide component is 0.5-30% by weight as oxides. The alkoxide component is deposited on the other material powders and calcined to provide well dispersed oxide layer on the powder surface which forms uniform matrix phase giving high density by sintering. Sintered bodies (with or without whiskers) have low deterioration at high temperatures.