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High-dielectric-constant X8R type dielectric material for multilayer porcelain capacitor, and preparation method for dielectric material
The invention relates to a high-dielectric-constant X8R type dielectric material for a multilayer porcelain capacitor, and a preparation method for the dielectric material. The chemical formula of the material is 0.9BaTiO3-0.1Na0.5Bi0.5TiO3-0.02Nb2O5-xM2O3, wherein M is Mn, Fe or In, and x is larger than 0.003 and smaller than 0.006. The preparation method comprises the following steps: 1) preparing Na0.5Bi0.5TiO3 powder; 2) preparing BaTiO3 powder; 3) batching according to the stoichiometric ratio of metallic elements, placing raw materials into a ball mill to be subjected to mixing ball milling through a wet ball milling method, and drying to obtain ceramic powder; 4) grinding the ceramic powder, pelleting, screening, performing dry pressing to obtain a ceramic green body; 5) performing dumping on the ceramic green body, and sintering to obtain the high-dielectric-constant dielectric material. The dielectric ceramic material prepared by the invention is excellent in dielectric constant wide temperature range stability, higher in dielectric constant and lower in dielectric loss.
High-dielectric-constant X8R type dielectric material for multilayer porcelain capacitor, and preparation method for dielectric material
The invention relates to a high-dielectric-constant X8R type dielectric material for a multilayer porcelain capacitor, and a preparation method for the dielectric material. The chemical formula of the material is 0.9BaTiO3-0.1Na0.5Bi0.5TiO3-0.02Nb2O5-xM2O3, wherein M is Mn, Fe or In, and x is larger than 0.003 and smaller than 0.006. The preparation method comprises the following steps: 1) preparing Na0.5Bi0.5TiO3 powder; 2) preparing BaTiO3 powder; 3) batching according to the stoichiometric ratio of metallic elements, placing raw materials into a ball mill to be subjected to mixing ball milling through a wet ball milling method, and drying to obtain ceramic powder; 4) grinding the ceramic powder, pelleting, screening, performing dry pressing to obtain a ceramic green body; 5) performing dumping on the ceramic green body, and sintering to obtain the high-dielectric-constant dielectric material. The dielectric ceramic material prepared by the invention is excellent in dielectric constant wide temperature range stability, higher in dielectric constant and lower in dielectric loss.
High-dielectric-constant X8R type dielectric material for multilayer porcelain capacitor, and preparation method for dielectric material
LIU HANXING (Autor:in) / SUN YUE (Autor:in) / ZHANG SHUJUN (Autor:in) / HAO HUA (Autor:in) / CAO MINGHE (Autor:in) / HUANG XUECHEN (Autor:in) / YAN HAILUN (Autor:in)
11.11.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2016
High-dielectric-constant capacitor material and preparation method thereof
| Europäisches Patentamt | 2021