Effects of CuO on the Preparation,Microstructure and Dielectric Response of CaCu3Ti4O12

摘要：

　　CaCu3Ti4O12 (CCTO) barrier layer ceramic capacitor was prepared by a two-step sintering process.The CCTO powders were pre-synthesized at 900℃ by solid-state reaction and the effects of the amount of CuO on the formation of the CCTO powders were investigated.The CCTO ceramics were prepared by the second-step sintering.It was found that the abnormal grain growth and inhomogeneous microstructure are controlled by the amount of excessive CuO.The optimized CuO content in the composites is ~14 wt%.The maximum permittivity is 115,000 (1kHz,210℃).

关键词： CaCu3Ti4O12 CuO bimodal grain Dielectric property

作者: Qiao Jianfang Qin Dandan Guan Li Wang Hailong Zhang Rui

作者单位: School of Materials Science and Engineering,Zhengzhou University,Henan 450001,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 121-122

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）