硅酸盐学报2008，Vol.36Issue(5)：602-607,6.
(1-x)(Bi1/2Na1/2)0.900Ba0.088Sr0.012TiO3-x(Bi1/2K1/2)TiO3无铅压电陶瓷的电学和力学性能
ELECTRICAL AND MECHANICAL PROPERTIES OF (1-x)(Bi1/2Na1/2)0.900Ba0.088Sr0.012TiO3-x(Bi1/2K1/2)TiO3LEAD-FREE PIEZOELECTRIC CERAMICS
摘要
Abstract
Bismuth sodium titanate (Bi1/2Na1/2)TiO3 (BNT) lead-free ceramics containing multiple A-site dopants were synthesized byconventional ceramic processing, and their electrical properties and mechanical properties were investigated to reveal the effects of the multiple A-site dopants on the BNT-based ceramics. In the case of (1-x)(Bi1/2Na1/2)0.900Ba0.088Sr0.012TiO3-x(Bi1/2K1/2)TiO3(x=0-0.14) ceramics, the maximum of the piezoelectric constant d33 (168 pC/N) was obtained for the x=0.10 composition. The dielec-tric constant ε33T/ε0, loss tangent tan δ and planar electromechanical coupling factor kp at 1 kHz and room temperature are 1221, 0.0361and 0.2281, respectively. The Curie temperature first increases with increasing x value and reaches the maximum value of 300℃ at the x=0.12 composition, then decreases with further increasing of the x value. The Vickers hardness and fracture toughness of theceramics.关键词
钛酸铋钠/压电陶瓷/电学性能/力学性能Key words
bismuth sodium titanate/ piezoelectric ceramics/ electrical properties/ mechanical properties分类
信息技术与安全科学引用本文复制引用
彭春娥,甄玉花,张雅茹,李敬锋..(1-x)(Bi1/2Na1/2)0.900Ba0.088Sr0.012TiO3-x(Bi1/2K1/2)TiO3无铅压电陶瓷的电学和力学性能[J].硅酸盐学报,2008,36(5):602-607,6.基金项目
国家自然科学基金(50325207、50672040) （50325207、50672040）
高等学校博士学科点专项科研基金(20060003023) （20060003023）
丰田公司-清华大学合作项目. （）
