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:
Dec. 29, 1992
Filed:
Oct. 09, 1991
Applicant:
Inventors:
Jonathan L Albain, Pretoria, ZA;
Adrian W Paterson, Pretoria, ZA;
Assignee:
Lillywyte Societe Anonyme, Luxembourg, LU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
419 38 ; 419 19 ; 419 23 ; 419 39 ; 75232 ; 75228 ;
Abstract
A method is disclosed of making a sintered composite unitary artifact having an alpha-alumina component fast with a metal component. Particulate alpha-alumina and a glass-forming additive are mixed together; and a green artifact is pressed having an alumina portion formed from the mixture and a metal portion formed from a particulate metal. The green artifact is then heated under a non-oxidizing atmosphere to a temperature at which both portions undergo densification. This provides a sintered artifact having a debased alpha-alumina component sintered to a metal artifact.