钛酸铜钙/钛酸钙复合陶瓷的制备和介电性能  

Preparation and Dielectric Properties of CaCu_3Ti_4O_(12)/CaTiO_3 Composite Ceramics

作　　者：陈克丕[1] 李翠伟[2] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206 [2]北京交通大学,北京100044

出　　处：《稀有金属材料与工程》2009年第A02期387-390,共4页Rare Metal Materials and Engineering

基　　金："973"计划资助项目(2006CB605105)

摘　　要：以CaCO3、TiO2、CuO为原料,采用两种工艺途径制备了(1-x)CCTO-xCTO(0≤x≤1)复合陶瓷材料。采用X射线衍射仪、扫描电子显微镜、阻抗分析仪对(1-x)CCTO-xCTO复相陶瓷的相组成、显微结构特征和介电性能进行了研究,发现不同工艺途径制备的(1-x)CCTO-xCTO复合陶瓷的显微结构略有差异,但介电性能基本相同,表明两种工艺途径制备的陶瓷中CCTO和CTO具有相似的连接情况。此外,还发现2/8CCTO-6/8CTO复合陶瓷在室温和1kHz频率时,材料的介电常数ε接近1500,且介电损耗tgδ小于0.08。The （1-x）CCTO-xCTO （0≤x≤ 1 ） composite ceramics have been prepared by two methods using CaCO3, TiO2 and CuO as starting materials. The phase compositions, microstrueture characteristic and dielectric properties of （1-x）CCTO-xCTO （0≤x≤1） composite ceramics were studied by X-ray diffraction （XRD）, scanning electronic microscopy （SEM） and impedance spectroscopy. The results showed that the microstructure of （1-x）CCTO-xCTO ceramics prepared by method A was slightly different from that of （1-x）CCTO-xCTO ceramics prepared by method B, but the dielectric properties of （1-x）CCTO-xCTO ceramics prepared by method A was similar to that of （1-x）CCTO-xCTO ceramics prepared by method B. The 6/8CTO-2/8CCTO multiphase ceramics were found to exhibit a high dielectric constant of 1500 with a low dissipation factor of 0.08 at 1 kHz.

关 键 词：钛酸铜钙 钛酸钙 复合陶瓷 介电性能 

分 类 号：TQ174.1[化学工程—陶瓷工业]