Preparation and Characterization of CaCu3Ti4O12 Ceramics by Cold Isostatic Press Forming
CaCu3Ti4O12 (CCTO) ceramics were prepared by cold isostatic press (CIP) forming combined with the conventional sintering method.The effects of calcining temperature on properties of CCTO ceramics were investigated.The dielectric properties as the function of temperature at typical frequencies were measured in the temperature range from 243 to 363 K.In addition,the dielectric properties and complex impedances at room temperature were analyzed in a frequency range from 20 Hz to 106 Hz.The results showed that CCTO ceramics with dielectric constant higher than 104 were obtained.Compared with the dry press forming,CCTO ceramics prepared by CIP had more homogeneous grains,less porosity and better dielectric properties.
CaCu3Ti4O12 Giant dielectric constant Cold isostatic press forming
Jie Li Hao Xue Zhaoxian Xiong
Department of Materials Science and Engineering,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
123-125
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）