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. 16, 1992
Filed:
Jan. 23, 1991
Applicant:
Inventor:
Yoshio Akimune, Kanagawa, JP;
Assignee:
Nissan Motor Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501 92 ; 501 97 ; 501 98 ; 264 66 ;
Abstract
A method for producing a sintered silicon carbide and silicon nitride base composite which is suitable for a material for automotive engine parts. The method is comprised of compacting a mixture including, as major components, powder of .beta.-type silicon carbide and powder of .alpha.-type silicon nitride to form a compact. The compact is first sintered at ordinary pressure, and then resintered at a pressure of nitrogen gas ranging from 10 to 2000 atmosphere and at a temperature higher 100.degree. to 200.degree. C. than that in the ordinary pressure sintering, thereby obtaining the sintered composite high in strength and toughness.