High strength porcelain and method therefor

Details High strength porcelain and method therefor High strength porcelain and method therefor

1994-08-29

1995-10-24

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Clay containing

501143, 501144, 501153, 501154, 264 56, C04B 3326

Patent

active

054610150

ABSTRACT:
A porcelain having 9 to 55% by weight of SiO.sub.2, 36 to 87% by weight of Al.sub.2 O.sub.3, 0 to 2.0% by weight of Fe.sub.2 O.sub.3, 0 to 1.0% by weight of TiO.sub.2, 0 to 0.5% by weight of CaO, 0 to 0.5% by weight of MgO, 1.0 to 4.0% by weight of K.sub.2 O and Na.sub.2 O combined, and 0.25 to 25.0% by weight of bismuth oxide is disclosed. The porcelain has unexpectedly high unglazed bending strength and may be used for dielectric and structural applications.

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