ZnO掺杂对PNN-PZT陶瓷结构及压电性能的影响  

Effect of ZnO Doping on Structure and Electrical Properties of PNN-PZT Ceramics

作　　者：张浩[1] 郑德一 彭贵贵 胡顺敏[1] 程程[1] 张静[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550000

出　　处：《压电与声光》2016年第6期923-925,共3页Piezoelectrics & Acoustooptics

基　　金：贵州省国际科技合作计划基金资助项目(黔科合外G字[2012]7010号);贵州省工业攻关基金资助项目(黔科合GY字[2013]3075)

摘　　要：通过传统的固相烧结法制备了Pb(Ni_(1/3)Nb_(2/3))_(0.5)(ZraTib)_(0.5)O_3+x%ZnO(PNN-PZT+x%ZnO,质量分数x=0.2,0.4,0.6,0.8)压电陶瓷,该文研究了不同ZnO含量对PNN-PZT压电陶瓷的微观形貌、相结构及压电性能的影响。通过X线(XRD)表明,过量的ZnO加入使压电陶瓷出现焦绿石相;通过扫描电镜(SEM)分析表明,当x>0.4时,ZnO的加入由于烧结温度的降低,晶界不明显。实验表明,烧结温度为1 190℃保温2h,ZnO的掺杂量x=0.4时,压电材料的综合性能最好:介电常数εr=5 596,介电损耗tanδ=2.12%,压电常数d33=534pC/N,机械耦合系数kp=0.53。Pb（Ni1/3Nb2/3）0.5（ZraTib）0.5O3＋x%ZnO（PNN-PZT＋x%ZnO,x = 0. 2,0. 4,0. 6,0. 8） piezoelectric ceramics were prepared by the conventional solid-state reaction method. The effects of different ZnO contents on the mierostructure, phase structure, dielectric and piezoelectric properties. The XRD analysis indicated that the pyroehlore phase occurred with increasing of ZnO content. The SEM analysis indicated that the grain boundary is unclearly in high ZnO content. The dielectric properties indicated that the optimum properties of this system ceramic were obtained with x=0.4 at the sintering temperature of 1 190℃ for 2 h. The main parameters of the ceramic are as follows： εr=5 596, tan 3：2.12%,d33-534 pC/N, kp-0.53.

关 键 词：固相烧结法 PNN-PZT 相结构 微观形貌 电学性能 

分 类 号：TN384[电子电信—物理电子学]