Low temperature sealing composition with synthetic zircon

Details Low temperature sealing composition with synthetic zircon Low temperature sealing composition with synthetic zircon

1985-03-18

1986-11-04

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

423 20, 423 84, 423 85, 423608, 428432, 501 17, 501 18, C03C 824

Patent

active

046210644

ABSTRACT:
A sealing composition suitable for sealing alumina packages for integrated circuits at a temperature below about 450.degree. C. for a short time of about 10 minutes. The composition is a mixture of 50-80 wt % vitreous solder glass powder of PbO-B.sub.2 O.sub.3 system having a deformation point of 350.degree. C. or less, 1-35 wt % zinc material powder and 1-35 wt % zircon powder. The zircon powder is of a synthetic zircon artificially prepared to eliminate radioactive impurities such as uranium and/or thorium.

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patent: 4524001 (1985-06-01), Joubert
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patent: 4537863 (1985-08-01), Matsuura et al.

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