Glass-or ceramic-to-metal seals

Details Glass-or ceramic-to-metal seals Glass-or ceramic-to-metal seals

1979-12-20

1981-06-16

Rosenbaum, Mark

Metal fusion bonding

Process

Using only pressure

228173B, B23K 2024

Patent

active

042732824

ABSTRACT:
A method for making a glass-or ceramic-to-metal seal, and the seal itself. A layer of gold is deposited onto the metal. A thin layer of indium is placed over the gold, and the structure is heated above the melting point of indium to create a gold-indium alloy at the gold-indium interface. After cooling, the indium surface of the structure and the glass surface are super-cleaned. The super-cleaned surface are then pressed together to form an air-tight seal.

REFERENCES:
patent: 2709147 (1955-05-01), Ziegler
patent: 3798746 (1974-03-01), Alphonse et al.
patent: 4010583 (1977-03-01), Highberg
patent: 4159075 (1979-06-01), Ljung et al.
patent: 4196837 (1980-04-01), Burkart et al.

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