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:
Nov. 23, 1993
Filed:
Nov. 04, 1992
Applicant:
Inventors:
Kevin Rafferty, Harrison, OH (US);
Bruce Rowe, Cincinnati, OH (US);
Assignee:
Coating Applications, Inc., Cincinnati, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ;
U.S. Cl.
CPC ...
228220 ; 228224 ; 2282481 ; 148 24 ; 148 26 ;
Abstract
A braze paste is disclosed for brazing superalloys together which includes an organic binding system, a major amount of a nickel, cobalt, gold, silver, copper or palladium based braze alloy and ground polytetrafluoroethylene. The braze paste can be used to braze superalloys together without prior nickel treatment. In the brazing step, the polytetrafluoroethylene decomposes and forms fluoride ions which in turn acts on any oxide that may form during the brazing step to remove the oxide and permit a good braze between the metal objects.