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, 2004
Filed:
Nov. 02, 2001
Andrew J. Strutt, La Jolla, CA (US);
Rohr, Inc., Chula Vista, CA (US);
Abstract
A liquid interface diffusion bonded composition comprises a metal honeycomb core such as a nickel-alloy honeycomb core and a nickel-alloy facing sheet bonded thereto. The composition and method of this invention are useful in applications where high strength, heat resistant materials are required, such as in aircraft and aerospace-related structures. The composition is prepared by a method comprising: (a) providing a nickel-alloy honeycomb core having a mating surface and a nickel-alloy facing sheet having a mating surface; (b) placing together the honeycomb core mating surface and the facing sheet mating surface, and providing therebetween a metal foil comprising nickel, zirconium, and at least one additional metal selected from the group consisting of titanium, niobium, and chromium; (c) subjecting the mating surfaces and metal foil therebetween to sufficient positive pressure to maintain position and alignment for joining; and (d) heating the mating surfaces and metal foil therebetween in a protective atmosphere for at least 2 hours to a temperature sufficient to cause melting between the metal foil and mating surfaces of the facing sheet and honeycomb core.