Ceramic substrate sintered at low temperatures

Details Ceramic substrate sintered at low temperatures Ceramic substrate sintered at low temperatures

1993-10-13

1994-08-16

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 8, 501 17, 501 21, 156 89, C03C 100, C03C 1400

Patent

active

053387104

ABSTRACT:
A ceramic substrate sintered at low temperature comprising: 20 to 50% by volume of an anorthite (CaAl.sub.2 Si.sub.2 O.sub.8) crystal phase, 1 to 20% by volume of a gahnite (ZnAl.sub.2 O.sub.4) crystal phase and the balance of a glass phase and, further, containing 35 to 50% by weight of alumina (Al.sub.2 O.sub.3) as a filler. Since the substrate can be sintered at a temperature lower than 900.degree. C., has a mechanical strength as large as more than 2500 kgf/cm.sup.2 and a thermal expansion coefficient of less than 60.times.10.sup.-7 /.degree.C., Au Ag and Cu can be used as a conductor and the substrate can be used like that existent alumina substrate.

REFERENCES:
patent: 4749665 (1988-06-01), Yamo et al.
patent: 4853349 (1989-08-01), Martin

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