Nonreducible dielectric ceramic composition

Details Nonreducible dielectric ceramic composition Nonreducible dielectric ceramic composition

1994-01-06

1995-03-14

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501 32, 501139, C04B 3546

Patent

active

053977530

ABSTRACT:
A nonreducible dielectric ceramic composition consists essentially of: a primary component consisting essentially of 92.0 to 99.4 mol % of BaTiO.sub.3, 0.3 to 4.0 mol % of at least one of rare earth element, expressed by the general formula: Re.sub.2 O.sub.3, where Re is at least one rare earth element selected from the group consisting of Tb, Dy, Ho and Er, and 0.3 to 4.0 mol % of Co.sub.2 O.sub.3 ; a secondary component consisting essentially of BaO, MnO, MgO, and BaZrO.sub.3, the content of the secondary component being, per 100 moles of the primary component, 0.2 to 4.0 moles for BaO, 0.2 to 3.0 moles for MnO, 0.5 to 5 moles for MgO, and 0.5 to 4.0 moles for BaZrO.sub.3 ; and a vitreous component of a BaO--SrO--Li.sub.2 O--SiO.sub.2 system, the content of the vitreous component being 0.5 to 2.5 parts by weight per 100 parts by weight of the sum of the primary and secondary components.

REFERENCES:
patent: 4859641 (1989-08-01), Fujino et al.
patent: 5103369 (1992-04-01), Saito et al.
patent: 5202814 (1993-04-01), Kohno et al.
patent: 5204301 (1993-04-01), Ohkubo et al.
patent: 5268342 (1993-12-01), Nishiyama et al.

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