Dielectric Performance of Alumina Ceramics Sintered at Different Temperatures

摘要：

　　This paper investigated the influence of sintering temperature on the dielectric performance of alumina ceramic.Three different kinds of alumina ceramic samples were prepared using the same formula with three different sintering temperatures.The flashover voltage and surface charge distribution of the test samples were measured with a finger type electrode system under a positive pulse voltage application in a 1 × 10-4Pa vacuum circumstance.The experimental results showed that the samples with higher sintering temperature have worse dielectric performance.Based on the SEM observation,the change of dielectric performance could be attributed to the change ofmicrostructure of alumina ceramics.

关键词： Alumina Ceramics Dielectric performance Surface charge Flashover voltage

作者: Lijian Ding Youping Tu C.R.Li Jingchun Wang

作者单位: Beijing Key Laboratory of High Voltage and EMC,North China Electric Power University,Beijing 102206,PR 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: 659-662

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）