Sb_2O_3掺杂Pb(Zn_(1/3)Nb_(2/3))_(0.20)(Zr_(0.50)Ti_(0.50))_(0.80)O_3-0.5%MnO_2压电陶瓷性能  

Properties of Pb(Zn_(1/3)Nb_(2/3))_(0.20)(Zr_(0.50)Ti_(0.50))_(0.80)O_3-0.5%MnO_2 Piezoelectric Ceramics Doped with Sb_2O_3

作　　者：陈亚君[1] 刘彭义[1] 祝兰[1] 常鹏[1] 

机构地区：[1]暨南大学物理系,广东广州510632

出　　处：《压电与声光》2010年第2期287-289,292,共4页Piezoelectrics & Acoustooptics

基　　金：广州市科技计划基金资助项目(2008z1-D411)

摘　　要：采用二步合成法制备了掺杂z%Sb2O3的Pb(Zn1/3Nb2/3)0.20(Zr0.50Ti0.50)0.80O3-0.5%MnO2(PZNTM)压电陶瓷(Sb2O3的质量分数为z=0、0.1、0.3、0.5、0.7、0.9)。探讨了不同剂量Sb2O3掺杂对陶瓷试样的相结构和机电性能的影响。结果表明,在1 150℃下烧结3 h,得到处在准同型相界附近的纯钙钛矿结构的陶瓷;随着Sb2O3掺杂量的增加,试样的压电常数d33和机电耦合系数kp先增大后减小,而介电损耗tanδ持续上升,机械品质因数Qm则持续下降。当z=0.3时,压电陶瓷的性能得到优化,d33和kp均达到最大值,分别为302 pC/N和0.60,而tanδ较小、Qm较大,分别为0.006和880。A Pb（ Zn1/3 Nb2/3 ） 0. 20 （ Zr0.50Ti0.50 ） 0. 80O3-0.5 % MnOe （PZNTM） piezoelectric ceramics doped with z% Sb20% （mass contents z=0, 0.1, 0.3, 0.5, 0.7, 0.9） were prepared by the two step synthetic method. The effect of different doped mass contents of Sb2O3 on the crystallographic phase and electromechanical properties have been studied. The results showed that the pure perovskite structure was obtained at sintering temperature of 1 150 ℃ for 3 h, and is nearly by the morphotropic phase boundary （MPB）. With the increasing of Sb2O3 content, the piezoelec- tric constant daa and electromeehanical coupling factor kp increased, then decreased,moreover, the dielectric loss tan 3 increased and the mechanical quality factor Qm decreased. When z is 0. 3, the largest d3a and kp are 302 pC/N and 0.60, respectively, and the tan 3 and Qm are o. 006 and 880, respectively.

关 键 词：准同型相界 相结构 机电性能 

分 类 号：TM282[一般工业技术—材料科学与工程]