Process for brazing a metal object to a ceramic surface defining

Details Process for brazing a metal object to a ceramic surface defining Process for brazing a metal object to a ceramic surface defining

1990-06-04

1991-02-26

Heinrich, Sam

Metal fusion bonding

Process

Metal to nonmetal with separate metallic filler

228217, 228239, 228255, 22826321, B23K 119, B23K 3102, B23K10316

Patent

active

049955470

ABSTRACT:
The present invention provides a method for brazing a metal object to a ceramic surface defining a recess for receiving the metal object where the space between the metal object and the ceramic surface defining the recess inhibits the establishment of the oxygen depleted environment necessary to establish a reliable braze joint. The present invention includes the use of a material having a high affinity for oxygen that is positioned adjacent to the space between the metal object and the ceramic surface defining the recess and serves to pull or draw oxygen from the space to establish the oxygen depleted environment required to produce a reliable braze joint.

REFERENCES:
patent: 3768985 (1973-10-01), Woodward
patent: 3980220 (1976-09-01), Wolfe et al.
patent: 4098452 (1978-07-01), Webster et al.
patent: 4621761 (1986-11-01), Hammond et al.
Electronics, "Metal Ceramic Brazed Seals", pp. 97-99, Jul., 1947.
Welding Journal, "Ceramic-to-Metal Joining with Active Brazing Filler Metal", pp. 27-32, Oct., 1985.

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