Glass and ceramic substrate using the same

Details Glass and ceramic substrate using the same Glass and ceramic substrate using the same

1997-02-12

1998-05-05

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 66, 501 67, 501 69, 501 70, 501 72, C03C 1400, C03C 3091

Patent

active

057473960

ABSTRACT:
A borosilicate glass composition comprising 55-67 mol % of SiO.sub.2, 3-11 mol % of Al.sub.2 O.sub.3, 16-26 mol % of B.sub.2 O.sub.3, and 3-11 mol % of at least one oxide of SrO, CaO, MgO and ZnO is useful in the preparation of ceramic substrates. Since the amount of orthoboric acid formed on the glass in contact with humid air is minimized, the glass gives rise to little trouble in the manufacture of ceramic substrates. Ceramic compositions using the glass and a filler can be fired at low temperatures into sintered substrates which are characterized by a low dielectric constant, low dielectric dissipation factor, and high flexural strength.

REFERENCES:
patent: 4749665 (1988-06-01), Yano et al.
patent: 4824806 (1989-04-01), Yokoi et al.
patent: 5610108 (1997-03-01), Watzke et al.
patent: 5633090 (1997-05-01), Rodek et al.

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