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US 6,387,835 B2Granted
Dielectric ceramic composition, ceramic capacitor using the composition and method of producing thereof
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJong Hee Kim, Shigehiro Fujino, Nobutake Hirai
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Abstract
The dielectric ceramic composition according to present invention, is characterized in comprising a component of formula SrxCa1−x(ZryTi1−y)03 (where 0.7≦x≦1; 0.9≦y≦1) to which MnO2 of 0.05-20 wt %, at least one of 0.001-5 wt % selected from tie group consisting of Bi2O3, PbO and Sb2O3 and a glass component of 0.5-10 wt % are added based on the weight of the main component.
Claims20
A dielectric ceramic composition comprising a main component of formula SrxCa1−x(ZryTi1−y)03 (where 0.7≦x≦1;
- 0.9≦y≦1), MnO2 of 0.05-20 wt %, at least one of 0.001-5 wt % selected from the group consisting of Bi2O3, PbO and Sb2O3, and a glass component of 0.5-10 wt %, based on the weight of the main component.
A method of producing a dielectric ceramic composition, comprising the steps of:
- forming a bulk or a sheet with powder including a main component of formula SrxCa1−x(ZryTi1−y)03 (where 0.7≦x≦1;
- 0.9≦y≦1), to which MnO2 of 0.05-20 wt %, at least one of 0.001-5 wt % selected from the group consisting of Bi2O3, PbO and Sb2O3 and a glass component 0.5-10 wt % are added based on the weight of the main component;
- and
- firing the bulk or the sheet at 925-1080° C.
1 more element
Dependencies are inferred from the claim text.