Oxide glasses having low glass transformation temperatures

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

1988-08-22

1990-02-27

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Free metal containing

252512, 252513, 501 19, 501 49, 106 112, 106 113, 106 114, 106 115, H01B 106

Patent

active

049044150

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 transition 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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