Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Patent
1999-06-14
2000-05-30
Brunsman, David
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
3332191, C04B 35457, C04B 35465, H01P 710
Patent
active
060691042
ABSTRACT:
A microwave dielectric porcelain composition having a composition represented by the formula xTiO.sub.2 -ySnO.sub.2 -zMgO, wherein x, y and z each represents an axis of mol-% in a triangular diagram, the sum of x, y and z being 100 mol-%, a pentagonal region is formed by sequentially connecting points P (x=59, y=11, z=30 ), Q (x=63, y=11, z=26), R (x=22.5, y=77.5, z=0), S (x=2, y=98, z=0), T (x=4, y=90, z=6) and P, and the formula is defined to be within the PQ, QR, ST and TP sides, but not defined by the RS side, of the pentagonal region.
Itakura Kazuhisa
Yasunishi Yuji
Brunsman David
NGK Spark Plug Co. Ltd.
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