首页 | 本学科首页   官方微博 | 高级检索  
     检索      

溶胶-凝胶法制备Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3体系无铅压电陶瓷的研究
引用本文:廖润华,李月明,江向平,王竹梅,张玉平.溶胶-凝胶法制备Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3体系无铅压电陶瓷的研究[J].人工晶体学报,2008,37(3).
作者姓名:廖润华  李月明  江向平  王竹梅  张玉平
作者单位:景德镇陶瓷学院,景德镇,333001
摘    要:采用溶胶-凝胶法制备(1-x)Na0.5Bi0.5 TiO3-xK0.5Bi0.5TiO3体系无铅压电陶瓷.XRD分析表明,用溶胶-凝胶法可以在650℃下合成具有钙钛矿结构的(1-x)Na0.5Bi0.5TiO3-xK0.5Bi0.5TiO3粉体,且在x=0.18~0.30之间存在三方-四方准同型相界(MPB).陶瓷的压电性能参数表明,该体系在MPB组成范围内具有最佳的压电性能:x=0.30时,压电常数d33达到最大值(d33=150 Pc·N-1),平面机电耦合系数kp与介电常数εH33T/ε0均在x=0.26时达到最大值,分别为36.7%和1107.

关 键 词:钛酸铋钠  溶胶-凝胶法  准同型相界  无铅压电陶瓷  Na0.5  Bi0.5TiO3  Sol-gel  method  morphotropic  phase  boundary  lead-free  piezoelectricceramic

Study on the Properties of Na0.5Bi0.5TiO3-K0.5 Bi0.5 TiO3 System Piezoelectric Ceramic Prepared by Sol-gel Method
LIAO Run-hua,LI Yue-ming,JIANG Xiang-ping,WANG Zhu-mei,ZHANG Yu-ping.Study on the Properties of Na0.5Bi0.5TiO3-K0.5 Bi0.5 TiO3 System Piezoelectric Ceramic Prepared by Sol-gel Method[J].Journal of Synthetic Crystals,2008,37(3).
Authors:LIAO Run-hua  LI Yue-ming  JIANG Xiang-ping  WANG Zhu-mei  ZHANG Yu-ping
Abstract:In this paper, Sol-gel method was employed to prepare the (1-x) Na0.5Bi0.5TiO3-xK0.5Bi0.5TiO3 system lead-free piezoelectric ceramics. XRD results revealed that pure perovskite- type crystal structure of (1-x) Na0.5Bi0.5TiO3-xK0.5Bi0.5TiO3 powders can be synthesized by Sol-gel method calcined at 650 ℃, and the morphotropic phase boundary (MPB) with rhombohedral and tetragonal crystalline structure co-existed compositions was identified in the range of 0.18 to 0.30 of x concentration. In the MPB composition, the piezoelectric constant d33 reaches maximum 150 pC/N at x =0.30, and when x equals to 0.26, electromechanical coupling factor kp and dielectric constant εT33/ε0 reach the maximum value which are 36.7% and 1107, respectively.
Keywords:Na0  5 Bi0  5TiO3  Sol-gel method  morphotropic phase boundary  lead-free piezoelectricceramic
本文献已被 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号