【摘要】 在BaTiO3瓷的基础上加入SrTiO3,CaCO3,Bi2O3.3TiO2等,以合理工艺制度,烧制成具有(1-z)(Ba1-x-ySrxCay)TiO3.z(Bi2O3.3TiO2)化学形式的瓷料。通过正交实验法研究了不同添加剂对该系统高压陶瓷电容器材料性能的影响,同时在此基础上进一步优化配方,得到了介电常数可调、综合性能较佳的瓷料配方,其中介电常数较高、性能较好的配方为:0.97(Ba0.6Sr0.3Ca0.1)TiO3.0.03(Bi2O3.3TiO2),其性能为:εr=3802,tanδ=4.2×10-3,Eb=9.2 kV.mm-1;介电损耗最低、耐压强度最大的配方为:0.96(Ba0.45Sr0.4Ca0.15)TiO3.0.04(Bi2O3.3TiO2)其性能为:rε=2089,tanδ=6×10-4,Eb=16.9 kV.mm-1。更多还原

【Abstract】 The SrTiO₃,Bi₂O₃·3TiO₂ and CaTiO₃ were added to the BaTiO₃-based high voltage ceramic capacitor materials,and the formula（1-z）(Ba_1x-ySr_xCa_y)TiO₃·z（Bi₂O₃·3TiO₂） was gotten.The effect of the formula with various values of x,y,and z on the dielectric properties was investigated by means of orthogonal design experimentation.Then the prescriptions were further optimized on the base of orthogonal design experimentation.The proper formula 0.97(Ba_0.6Sr_0.3Ca_0.1)TiO₃·0.03（Bi₂O₃·3TiO₂）with high dielectric constant was obtained,whose dielectric properties are: ε_r=3802,tanδ=4.2×10^-3,E_b=9.2 kV·mm^-1,and also the formula 0.96(Ba_0.45Sr_0.4Ca_0.15)TiO₃·0.04（Bi₂O₃·3TiO₂）with low dielectric loss and high breakdown voltage,whose dielectric properties are: ε_r=2089,tanδ=6×10^-4,E_b=16.9 kV·mm^-1.更多还原