Low-fire, low-dielectric ceramic compositions
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United States of America Patent
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Oct 24, 2000
Grant Date -
N/A
app pub date -
Jun 11, 1999
filing date -
Aug 18, 1998
priority date (Note) -
Expired
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Abstract
A low-fire, low-dielectric ceramic composition is disclosed. The ceramic composition comprises a mixture of finely divided particles consisting of 30-90% by volume of calcium borosilicate glass and 10-70% by volume of fillers consisting essentially of Al.sub.2 O.sub.3 and amorphous SiO.sub.2, which can be densified up to 95% at temperatures of 800-1000.degree. C. The sintered body produced thereby exhibits a dielectric constant in the range of 6-9 and a dielectric loss in the range of 0.01%-0.5% at 1 MHz. The ceramic composition can be processed with organic solvent, polymeric binder and plasticizer to produce a green sheet which is co-firable with high electrical conductivity metal such as gold, silver, silver-palladium and copper.
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