Sealing glass composition

Details Sealing glass composition Sealing glass composition

1978-05-01

1980-01-29

Seccuro, Carman J.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 19, 106 47R, 106 54, C03C 312, C03C 314, C03C 330, C03C 1200

Patent

active

041860233

ABSTRACT:
Lead borate and lead zinc borate glasses containing from 0.1 to 10% by weight cuprous oxide (Cu.sub.2 O) and fluoride, the molar ratio of cuprous oxide to fluoride being in the range 1:0.25 to 1:10, preferably in the range 1:1 to 1:5, and up to 5% by weight bismuth oxide. These glasses may be mixed with particulate refractory fillers in amounts up to about 56% by volume. The sealing glasses are useful for bonding ceramic, glass and metal parts together at low temperatures. They are especially useful as semiconductor package sealants.

REFERENCES:
patent: 3115415 (1963-12-01), Hoffman
patent: 3250631 (1966-05-01), Lusher
patent: 3485648 (1969-12-01), Bishop
patent: 4004936 (1977-01-01), Powell
Takamori, et al., "Role of Copper Ions in Low-Melting Solder Glasses", 1976, pp. 312-316, Journal of the American Ceramic Society, vol. 59, No. 7-8.

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