Brazed lower vacuum housing for a dewar

Details Brazed lower vacuum housing for a dewar Brazed lower vacuum housing for a dewar

1994-07-19

1997-02-04

Heinrich, Samuel M.

Metal fusion bonding

Process

Metal to nonmetal with separate metallic filler

228175, 228184, B23K 119

Patent

active

055989667

ABSTRACT:
A lower vacuum housing (34) of a sensor dewar (26) is fabricated in a single brazing operation from ceramic and metallic components. The components are assembled with ceramic-to-metal interfaces and metal-to-metal interfaces. Brazing is accomplished by active brazing of the ceramic-to-metal interfaces and non-active brazing of the metal-to-metal interfaces. Specific combinations of active braze alloys and non-active braze alloys are provided for various combinations of dewar materials.

REFERENCES:
patent: 4645931 (1987-02-01), Gordon et al.
patent: 5131582 (1992-07-01), Kaplan et al.
patent: 5198671 (1993-03-01), Hatch et al.
Welding Journal, "Joining Ceramic to Metal with Ductile Active Filler Metal", Mizuhara and Huebel, pp. 43-51, Oct. 1986.

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