Low softening point metallic oxide glasses suitable for use in e

Details Low softening point metallic oxide glasses suitable for use in e Low softening point metallic oxide glasses suitable for use in e

1989-04-19

1990-07-31

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 73, 501 74, 106 114, 106 119, C03C 312

Patent

active

049450719

ABSTRACT:
This invention presents a series of glasses which possess low softening points, high resistance to recrystallization and good durability in the presence of moisture. The glasses are contained within oxides of silver, vanadium, tellurium, and lead and have glass transition temperatures below 260.degree. C., and are useful in electronic applications such as die attach adhesives and sealing glasses.

REFERENCES:
patent: 3853568 (1974-12-01), Chvatal
patent: 4401767 (1983-08-01), Dietz et al.
patent: 4459166 (1984-07-01), Dietz et al.
patent: 4743302 (1988-05-01), Dumesnil et al.
patent: 4743362 (1988-05-01), Dumesnil et al.
Johnson Matthey Trade Literature, "JM 4720* AUSUB.RTM. Die Attach Material".
Johnson Matthey Processing Guidelines, "JM 4613 and JM 4720 AUSUB Die Attach Paste".
Johnson Matthey Technical Service Bulletin, "JMI 4720 Peak Firing Temperatures", (Nov. 8, 1985).
QMI Technical Bulletin, "Processing Information for QMI 2412 Ag/Glass Die Attach Paste".

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