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, 1994
Filed:
May. 25, 1993
Applicant:
Inventors:
Suk-Joong L Kang, Taijeon, KR;
Yu S Shin, Kyonggi-do, KR;
Nong M Whang, Taijeon, KR;
Duk Y Yoon, Seoul, KR;
Deug J Kim, Taeku, KR;
Assignee:
Korea Advanced Institute of Science and Technology, Taijeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ; B05D / ;
U.S. Cl.
CPC ...
501105 ; 501103 ; 427190 ; 427201 ;
Abstract
MoO.sub.2 is used as an accelerant for transformation of zirconia (ZrO.sub.2) from a tetragonal to a monoclinic crystal phase. A ZrO.sub.2 -MoO.sub.2 alloy having an increased content of monoclinic ZrO.sub.2 is prepared by mixing MoO.sub.2 with ZrO.sub.2 followed by heat treatment. In another aspect of the invention, the surface of an alumina-zirconia composite is strengthened by heating the composite in the presence of MoO.sub.2 -ZrO.sub.2 mixed powder.