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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DIELECTRIC CERAMIC MATERIAL COMPOSITION FOR CAPACITOR
A dielectric ceramic material composition for a capacitor, which can be particularly a multilayer ceramic capacitor manufactured by a base-metal-electrode process, is provided. The dielectric ceramic material composition includes a main component BaTiO3 and at least one sub-component Sc2O3. BaTiO3 can be modified by controlling an addition amount of Sc2O3, and during the sintering reaction process, the addition of Sc2O3 can cause BaTiO3 to form a core-shell structure, thereby inhibiting grain growth of BaTiO3 and effectively improving insulation characteristic and capacitance temperature characteristic, and the stability to DC bias electric field. In an embodiment, MgO can be appropriately added to improve the stability of the TCC curve within an interval of −55° C. to 25° C. Therefore, the production process can be simplified and the usage amount of Sc2O3 can be reduced, thereby obtaining the dielectric ceramic material satisfying X8R characteristics regulated by EIA, at a low cost.
DIELECTRIC CERAMIC MATERIAL COMPOSITION FOR CAPACITOR
A dielectric ceramic material composition for a capacitor, which can be particularly a multilayer ceramic capacitor manufactured by a base-metal-electrode process, is provided. The dielectric ceramic material composition includes a main component BaTiO3 and at least one sub-component Sc2O3. BaTiO3 can be modified by controlling an addition amount of Sc2O3, and during the sintering reaction process, the addition of Sc2O3 can cause BaTiO3 to form a core-shell structure, thereby inhibiting grain growth of BaTiO3 and effectively improving insulation characteristic and capacitance temperature characteristic, and the stability to DC bias electric field. In an embodiment, MgO can be appropriately added to improve the stability of the TCC curve within an interval of −55° C. to 25° C. Therefore, the production process can be simplified and the usage amount of Sc2O3 can be reduced, thereby obtaining the dielectric ceramic material satisfying X8R characteristics regulated by EIA, at a low cost.
DIELECTRIC CERAMIC MATERIAL COMPOSITION FOR CAPACITOR
LI JIAN-HUA (Autor:in) / WANG SEA-FUE (Autor:in) / LAI YUAN-CHENG (Autor:in)
19.11.2020
Patent
Elektronische Ressource
Englisch
| Europäisches Patentamt | 2017
| Europäisches Patentamt | 2016