Morphotropic Phase Boundary Study of the BNT-BKT Lead-Free Piezoelectric Ceramics

摘要：

　　A lead-flee piezoelectric ceramic binary system based on bismuth sodium titanate (Bi0.5Na0.5)TiO3 (BNT)-bismuth potassium titanate (Bi0.5K0.5)TiO3 (BKT) was synthesized by conventional mixed-oxide technique.The XRD analysis showed that the rhombohedral-tetragonal morphotropic phase boundary (MPB) of the Bi0.5 (Na1-xKx)0.5 TiO3 system was in the composition range of x =0.16 ~ 0.20.In addition,the piezoelectric properties of this system were also investigated.It was indicated that the piezoelectric properties are better with the compositions near the rhombohedral phase within the MPB than the compositions near the tetragonal phase.

关键词： Bi0.5(Na1-xKx)0.5TiO3 Piezoelectric MPB

作者: Wei Zhao Heping Zhou Yongke Yan Dan Liu

作者单位: The State Key Laboratory of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,P.R.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: 1908-1910

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）