Effect of sintering temperature on microstructure and properties of (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoelectric ceramics

摘要：

(Bi0.5Na0.5)0.94Ba0.06TiO3 (BNBT6) piezoelectric ceramics were synthesized at the different sintering temperature range from 1120 to 1180℃ with an interval of 20℃ by the conventional ceramics fabrication technique. The bulk density, phase composition, microstructure, piezoelectric and dielectric properties of BNBT6 sintered samples have been investigated. Results show that all the BNBT6 sintered samples are of high density and consisted of both rhombohedral and tetragonal phases. At room temperature it is found that the BNBT6 sintered samples at 1160℃ for 2h are of the highest density (98％ theoretical density) and show good physical properties: piezoelectric constant d33=131pC/N; planar electromechanical coupling factor kp =0.297; dielectric constant εr=615; dielectric loss tanδ=0.020.

关键词： Bi0.5Na0.5)0.94Ba0.06TiO3 piezoelectric properties dielectric properties microstructure

作者: 师金华 杨万民

作者单位: 陕西师范大学物理与信息技术学院,西安710062

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）