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:
Jan. 07, 1997
Filed:
Oct. 04, 1995
Applicant:
Inventors:
Assignee:
National Institute for Research in Inorganic Materials, Tsukuba, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 88 ; 501 89 ;
Abstract
A superplastic silicon carbide sintered body which comprises at least 85 wt % and at most 98 wt % of silicon carbide grains and more than 2 wt % and less than 15 wt % of a grain boundary phase and which has a relative density of at least 95%, wherein the silicon carbide grains have an average grain size of at most 0.3 .mu.m, the amount of grains having grain sizes exceeding 0.5 .mu.m is at most 3 wt %, and the deformation rate of the sintered body is at least 10.sup.-4 /sec under a compression or tensile stress of from 50 to 2,000 kg/cm.sup.2 within a temperature range of from 1,600.degree. to 1,800.degree. C.