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:
Apr. 16, 2002
Filed:
Dec. 20, 1999
Takehiko Hirata, Yokohama, JP;
Hirokazu Yamamoto, Yokohama, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
This invention relates to processes for the production of a sintered body consisting of an intimate solid solution of Cr O and Al O by using inexpensive materials, as well as sintered bodies produced thereby. More specifically, it relates to processes for the production of a sintered body which comprises the steps of providing a powder mixture consisting essentially of Cr O powder and Al O powder each having an average particle diameter of not greater than 0.5 &mgr;m, or a powder mixture obtained by mixing the aforesaid powder mixture with 1.5 to 15% by weight of TiO powder having an average particle diameter of not greater than 0.5 &mgr;m, and sintering the powder mixture at a temperature of 1,350 to 1,600° C. in a vacuum atmosphere of 10 to 10 atm. to yield a sintered body consisting of an intimate solid solution of Cr O and Al O and having a relative density of not less than 95%, as well as sintered bodies produced thereby.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile