Dielectric ceramic composition

Details Dielectric ceramic composition Dielectric ceramic composition

1997-11-12

1999-05-18

Green, Anthony

Compositions: ceramic

Ceramic compositions

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

361313, 3613214, 3613215, C04B35/495

Patent

active

059050497

ABSTRACT:
Disclosed is a dielectric ceramic composition having a high dielectric constant, which can be fired along with silver and silver alloys at temperatures not higher than 1000.degree. C. To a two-component dielectric ceramic composition comprising a solid solution that consists essentially of lead nickel niobate Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 and lead titanate PbTiO.sub.3, added is at least one additive selected from the group consisting of the compounds Pb.sub.3 O.sub.4, CuO and WO.sub.3 capable of forming a composition of a chemical formula Pb(Cu.sub.1/2 W.sub.1/2)O.sub.3, and manganese oxide. The additives have the ability to promote the sintering of the two-component composition and to lower the firing temperature for the composition.

REFERENCES:
patent: 4704373 (1987-11-01), Kinoshita et al.
patent: 5415945 (1995-05-01), Azumi et al.
patent: 5759934 (1998-06-01), Matoba
Patent Abstract XP-00205055896, JP 05 058 645 A, Mar. 9, 1993, Hitachi Metals Ltd., Piezoelectric Ceramic Composition Actuate Comprise Mixture Lead Nickel, Niobate Lead Titanate Lead Zirconate Lead Tungstate.
WPIDS Abstract No. 87-174383, abstract of Japanese Patent Specification No. 62-105946, May 1987.

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