Hermetic bonded seal

Details Hermetic bonded seal Hermetic bonded seal

1977-12-02

1979-06-26

Lanham, C. W.

Metal fusion bonding

Process

Using only pressure

228121, 228124, 228206, B23K 2100

Patent

active

041590759

ABSTRACT:
A method for providing at room temperature a hermetic bonded seal between the surfaces of glass, ceramics, metals or any combination of these. The method comprises the steps of polishing the surfaces to be bonded and then plasma cleaning the surfaces. Next, a chemically cleaned bonding material such as indium is applied to the surfaces and a force is applied to the surfaces to be sealed at room temperature for a limited period of time to affect the bonded seal.

REFERENCES:
patent: 2984759 (1961-05-01), Vine
patent: 3090116 (1963-05-01), Burgess
patent: 3806365 (1964-04-01), Jacob
patent: 3951327 (1976-04-01), Snow et al.
patent: 3999698 (1976-12-01), Conkin
Knudsen, "Metallic Vacuum-Tight Gasket", Review of Scientific Instruments, vol. 23, pp. 566-567 (1952).
Smiley, "Window Seal for Gas Lasers", Review of Scientific Instruments, vol. 34, p. 820 (1963).
Hochul, "GaAsCO.sub.2 Laser Window Sealing Technique", Progress Report, NASA Grant NGR-21-002-216, Aug. 1970.

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