Method of producing low temperature firing dielectric ceramic co

Details Method of producing low temperature firing dielectric ceramic co Method of producing low temperature firing dielectric ceramic co

1993-11-08

1995-10-17

Ryan, Patrick J.

Stock material or miscellaneous articles

Composite

Of metal

428210, 428433, 428434, 428901, B32B 900

Patent

active

054589819

ABSTRACT:
A method of producing a dielectric ceramic composition is disclosed which includes the steps of: preparing a main ceramic composition comprising BaO, TiO.sub.2 and RE.sub.2 O.sub.3 (where RE represents at least one rare earth metal) as major components; calcining a mixture of starting materials which give the main ceramic composition, at a temperature of 1050.degree. C. or higher, to provide a calcined mixture; finely pulverizing the calcined mixture to provide a calcined ceramic powder having an average grain size of not larger than 0.8 .mu.m; and adding, as at least a part of a secondary component, a B.sub.2 O.sub.3 powder or a glass powder containing B.sub.2 O.sub.3, to the main ceramic composition. Also disclosed are a dielectric resonator and dielectric filter using such a dielectric ceramic composition as produced according to the above method, and a method of producing such a dielectric resonator or filter.

REFERENCES:
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patent: 3965552 (1976-06-01), Rutt
patent: 4222783 (1980-09-01), Atsumi et al.
patent: 4283753 (1981-08-01), Burn
patent: 4610971 (1986-09-01), Wada et al.
patent: 4861736 (1989-08-01), Ono et al.
patent: 5073523 (1991-12-01), Yamada et al.
patent: 5117326 (1992-05-01), Sano et al.

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