Lead perovskite based ceramic compositions without any free lead

Details Lead perovskite based ceramic compositions without any free lead Lead perovskite based ceramic compositions without any free lead

1994-01-13

1995-10-24

Brunsman, David

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

501112, 501121, 252 629, C04B 3500, C04B 3520, C04B 3546

Patent

active

054610141

ABSTRACT:
A ceramic composition which includes Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 or the oxide precursors thereof, in admixture with barium copper oxide of the formula BaCuO.sub.2 as a sinter aid therefor. The compositions do not contain any free lead oxide and have high dielectric constants, e.g. above 8000, and low loss factors, e.g. below 3%.

REFERENCES:
patent: 4670815 (1987-06-01), Alexander et al.
patent: 5011803 (1991-04-01), Park et al.
patent: 5183786 (1993-02-01), Gejima et al.
patent: 5262368 (1993-11-01), Hood et al.
International Publication No. WO 92/00930 of T. Beales et al. for "Sintering Aid," (Jan. 23, 1992).

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