Aluminum borate devitrification inhibitor in low dielectric boro

Details Aluminum borate devitrification inhibitor in low dielectric boro Aluminum borate devitrification inhibitor in low dielectric boro

1992-09-23

1993-12-14

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 17, 501 21, 501 66, 501 70, 501127, 501153, 428426, 428427, 428688, C03C 100, C03C 1400

Patent

active

052702685

ABSTRACT:
A ceramic composition for forming a ceramic dielectric body having a dielectric constant of less than about 5.5 and a TCE of less than about 3.5 ppm/.degree.C. The composition comprises a mixture of finely divided particles of 20-80 vol. % borosilicate glass and 20-80 vol. % of Al.sub.x B.sub.y O.sub.z wherein x is in the range of 4 to 22, y is in the range of 2 to 5, and z is in the range of 9 to 36. The Al.sub.x B.sub.y O.sub.z inhibits the formation of crystalline forms of silica. The composition can be used with a polymeric binder to produce an unfired green tape which is co-fireable with high conductivity metallurgies such as gold, silver and silver/palladium.

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