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:
May. 09, 1989
Filed:
Dec. 22, 1987
Applicant:
Inventors:
Ichiro Seki, Maebashi, JP;
Morinosuke Kano, Gunma, JP;
Akihiko Fujii, Numata, JP;
Akihiro Kano, Gunma, JP;
Isao Isa, Gunma, JP;
Assignee:
The Japan Carlit Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501105 ; 501107 ; 501127 ; 423608 ; 423625 ;
Abstract
Alumina-zirconia composite sintered materials having sufficient high-temperature strength and thermal shock resistance as well as excellent mechanical strength are made by mixing Bayer alumina and/or bauxite as an alumina and baddeleyite and/or zircon sand as a zirconia material in amounts of 50 to 95% by weight of alumina, the balance being zirconia, respectively, subjecting the mixture to heating, melting and quenching, grinding the resulting solid to an average grain size of 10 .mu.m or smaller, and subjecting the resulting powder to molding and sintering.