Oxide glasses having low glass transformation temperatures

Details Oxide glasses having low glass transformation temperatures Oxide glasses having low glass transformation temperatures

1989-12-04

1990-10-09

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 52, C03C 314

Patent

active

049620681

ABSTRACT:
PbO-B.sub.2 O.sub.3 -Ag.sub.2 O glasses having a preferred weight ratio range of 76-88:10-15:2-10 have glass transistion temperatures of less than 300.degree. C. and are especially useful for adhering together ceramic substrates such as for attaching integrated circuits to ceramic substrates. The glasses can be formulated with Ag particulates and organics and applied as pastes to provide conductive adhesives.

REFERENCES:
patent: 3711328 (1973-01-01), Wada et al.
patent: 4401767 (1983-08-01), Dietz et al.
patent: 4446059 (1984-05-01), Eustice
patent: 4636254 (1987-01-01), Husson, Jr. et al.
patent: 4699888 (1987-10-01), Dumesnil et al.
Takamori, T., "Solder Glasses", chapter in Treatise on Materials Science and Technology, vol. 17, Glass II, Edit. M. Momozawa and R. H. Doremus, Academic Press(1979), pp. 173-255.
Owens, N. L., Microelectronic Manuf. and Test. Apr., 1986, pp. 6-7, at p. 7.

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