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:
Aug. 09, 2011
Filed:
Jul. 21, 2009
Yoshihisa Beppu, Chiyoda-ku, JP;
Kazuo Sunahara, Yokohama, JP;
Yoshihisa Beppu, Chiyoda-ku, JP;
Kazuo Sunahara, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
Provided is a process for readily producing fine particles of a solid solution having a small particle size, comprising a solid solution of zirconia, ceria and a rare earth oxide in a desired composition, and being highly crystalline. The process for producing the fine particles of the solid solution comprises the following steps in the order named: obtaining a melt comprising, in terms of mol % on an oxide basis, from 5 to 50% ZrO, CeOand REO(where RE is at least one member selected from rare earth elements other than Ce) in total, from 10 to 50% RO (where R is at least one member selected from the group consisting of Mg, Ca, Sr, Ba and Zn), and from 30 to 75% BO; quenching the melt to obtain an amorphous material; heating the amorphous material to obtain precipitates containing crystals of a solid solution with ZrO, CeOand REO; and separating the crystals of the solid solution from the precipitates to obtain fine particles of the solid solution.