0.98Na_(0.5)Bi_(0.5)TiO_3-0.02NaNbO_3无铅压电陶瓷的极化研究  

Study on Polarization of Lead-free Piezoelectric Ceramics For 0.98Na_(0.5)Bi_(0.5)TiO_3-0.02NaNbO_3

作　　者：吕剑明[1] 范冠锋[1] 曹建新[1] 刘佳[1] 梁丽鹏[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550003

出　　处：《材料开发与应用》2009年第6期41-43,共3页Development and Application of Materials

摘　　要：极化显著影响压电陶瓷的应变量和电畴转向率,从而影响其压电性能。本文研究了0.98Na0.5Bi0.5TiO3-0.02NaNbO3压电陶瓷的极化条件。研究表明极化电场为4kV/mm、极化温度为120℃、极化时间为20min时,其压电常数d33最大值为96 pc.N-1。Since polarization has remarkable effect on the strain capacity and 90° domain - rotation rate of the piezoelectric ceramics, thus affecting the performance of its piezoelectric, the poling technique of 0.98Na0.5Bi0.5TiO3-0.02NaNbO3 piezoelectric ceramics was studied. The results shows that the piezoelectric properties of 0.98Na0.5Bi0.5TiO3-0.02NaNbO3 piezoelectric ceramics has remarkable improved when the poling electric field was 4kV/mm,the poling temperature was 120℃ and the poling time was 25min.

关 键 词：极化电场 极化温度 极化时间 压电性能 

分 类 号：TQ174[化学工程—陶瓷工业]