Microstructure and Piezoelectric Properties of (0.996-x) K0.5Na0.5NbO3 -0.004 BiFeO3-x LiSbO3 Ceramics
(0.996-x) K0.5Na0.5NbO3-0.004 BiFeO3-x LiSbO3 (x =0.00,0.02,0.03,0.04,0.05,0.06,0.07) lead-free piezoelectric ceramics were prepared by the conventional mixed oxide method.The compositional dependence of the phase structure and the electrical properties of the ceramics were studied.A morphotropic phase boundary between the orthorhombic and tetragonal phases was identified in the composition range of 0.03 < x < 0.06.With the content of LS increases,the size of the pores significantly decreases.However,adding larger amount of LS makes the pore size increase slightly.The (0.996-x)KNN-0.004 BF-xLS(x=0.05) ceramics possess good electrical properties:d33=280 pC/N,kp=53.3%,Tc=345 ℃,εr =1613,Tan δ =2.07%.These results show that the ceramic is a promising lead-free piezoelectric material.
Lead-free piezoelectric ceramics Phase structure K0.5Na0.5NbO3 Piezoelectricity
Min Hong Jiang Xin Yu Liu Guo Hua Chen Jia Feng Ma Gui Sheng Zhu Ji Wen Xu
Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin
国际会议
广州
英文
632-635
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）