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Lead-free high-dielectric-constant energy-storage dielectric ceramic material and preparation method thereof
The invention relates to a lead-free high-dielectric-constant energy-storage dielectric ceramic material and a preparation method thereof. The chemical formula of the dielectric material is (1-x)BaTiO[3-x]CaSnO3, wherein x=0.11-0.15. The preparation method comprises the following steps: 1) proportioning raw materials BaCO3, CaCO3, SnO2 and TiO2 according to the chemical formula stoichiometric ratio; 2) uniformly mixing the raw materials by ball milling, drying, presintering in a muffle furnace, and naturally cooling in the furnace to obtain ceramic powder; 3) carrying out ball milling on the ceramic powder, granulating, screening, aging and carrying out single-surface extrusion forming to obtain a ceramic disk biscuit; and 4) carrying out high-temperature sintering on the ceramic disk biscuit. The method has the advantages of simple technique and low cost, and is lead-free and environment-friendly. The prepared energy-storage dielectric ceramic material has high relative dielectric constant (epsilon r is greater than 10000), and the energy storage density is 0.41-1.17 J/cm<3>.
Lead-free high-dielectric-constant energy-storage dielectric ceramic material and preparation method thereof
The invention relates to a lead-free high-dielectric-constant energy-storage dielectric ceramic material and a preparation method thereof. The chemical formula of the dielectric material is (1-x)BaTiO[3-x]CaSnO3, wherein x=0.11-0.15. The preparation method comprises the following steps: 1) proportioning raw materials BaCO3, CaCO3, SnO2 and TiO2 according to the chemical formula stoichiometric ratio; 2) uniformly mixing the raw materials by ball milling, drying, presintering in a muffle furnace, and naturally cooling in the furnace to obtain ceramic powder; 3) carrying out ball milling on the ceramic powder, granulating, screening, aging and carrying out single-surface extrusion forming to obtain a ceramic disk biscuit; and 4) carrying out high-temperature sintering on the ceramic disk biscuit. The method has the advantages of simple technique and low cost, and is lead-free and environment-friendly. The prepared energy-storage dielectric ceramic material has high relative dielectric constant (epsilon r is greater than 10000), and the energy storage density is 0.41-1.17 J/cm<3>.
Lead-free high-dielectric-constant energy-storage dielectric ceramic material and preparation method thereof
LIU HANXING (author) / ZHOU BEI (author) / HAO HUA (author) / CAO MINGHE (author) / YAO ZHONGHUA (author) / WANG TING (author) / XU QI (author)
2015-09-02
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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