| abstract |
The invention relates to a novel CaTiO3-based linear energy-storage-medium ceramic material and a preparation method thereof. The novel CaTiO3-based linear energy-storage-medium ceramic material is characterized in that the expression is ZnxCa(0.97-x)La0.03Ti0.97Al0.03O3, and x ranges from 0.01 to 0.2. The preparation method comprises steps as follows: CaCo3, TiO2, La2O3, Al2O3 and ZnO are taken as raw materials, weighed in the stoichiometric ratio according to the chemical formula ZnxCa0(0.97-x)La0.03Ti0.97Al0.03O3 with x ranging from 0.01 to 0.2, mixed, subjected to ball milling, dried, pre-sintered at the temperature of 1,000-1,150 DEG C and subjected to secondary ball milling, pre-sintered powder is obtained, the pre-sintered powder is sieved, mixed with an adhesive, granulated and formed, a ceramic body is obtained after dumping and sintered in air at the temperature of 1,200-1,300 DEG C, and the novel CaTiO3-based linear energy-storage-medium ceramic material is obtained. CaTiO3 ceramic is co-doped with Zn<2+> and La<3+>/Al<3+>, and the ZnxCa(0.97-x)La0.03Ti0.97Al0.03O3 linear energy-storage-medium ceramic material is obtained. The material has the characteristics of low dielectric loss, good frequency stability, moderate dielectric constant and relatively high breakdown strength. |