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. 13, 1982
Filed:
Mar. 29, 1979
Applicant:
Inventors:
Howard D Blair, Romulus, MI (US);
Morton E Milberg, Southfield, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; B23K / ;
U.S. Cl.
CPC ...
228193 ; 2915 / ; 29420 ; 4162 / ; 264 60 ; 264 65 ;
Abstract
A method of joining silicon nitride based ceramic bodies is disclosed. At least one interfacing surface of shaped bodies (one or both of which may be hot-pressed or reaction-sintered) receives a layer of metallic aluminum based material. The bodies with the metallic aluminum based material therebetween are subjected to heating at 1400.degree.1900.degree. C. for a period typically 0.5-2 hours in a nitriding atmosphere to effect a chemical bond consisting of a conversion of the interfacing ceramic to a Si--Al--O--N system.