Na补偿的(Na,Bi)TiO_3-Ba(Zr,Ti)O_3无铅压电陶瓷  

Lead-free Ceramics(Na,Bi)TiO_3-Ba(Zr,Ti)O_3 Compensated with Na

作　　者：杜鹃[1] 王矜奉[1] 赵明磊[1] 明保全[1] 盖志刚[1] 郑立梅[1] 徐庆[2] 

机构地区：[1]山东大学物理与微电子学院晶体材料国家重点实验室,山东济南250100 [2]武汉理工大学材料学院,湖北武汉430070

出　　处：《压电与声光》2006年第4期431-433,共3页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(50572056);山东省重点自然科学基金资助项目(Z2003F04)

摘　　要：研究了(1-y)(Na0.5Bi0.5)TiO3-yBa(ZrxTi1-x)O3无铅压电陶瓷,获得压电应变常数d33高达185 pC/N的0.94(Na0.5Bi0.5)TiO3-0.06Ba(Zr0.055Ti0.945)O3压电陶瓷。添加0.04%摩尔过量Na2CO3的0.94(Na0.5Bi0.5)TiO3-0.06Ba(Zr0.055Ti0.945)O3高性能压电陶瓷d33高达195 pC/N。研究发现添加Na2CO3添加量至0.04%摩尔,Na起到软性添加物的作用,添加量超过0.04%,Na起到硬性添加物的作用.理论解释了过量Na的这一特性.为了降低介电损耗,对0.94(Na0.5Bi0.5)TiO3-0.06 Ba(Zr0.055Ti0.945)O3陶瓷进行了(Ce,Mn)掺杂改性研究。Lead-free piezoelectric ceramics （ 1 - y） （ Na0.5 Bi0.5 ） TiO3-yBa（ZrxTi1-x ）O3 were systematically investigated. Two compositions with high piezoelectric performances were obtained= one was 0. 94 （Na0.5 Bi0.5 ）TiO3-0. 06Ba（Zr0.055 Ti0.945 ）O3 having a piezoelectric strain constant d33 as high as 185 pC/N;the other was the 0.94（Na0.5Bi0.5）TiO3-0.06Ba（Zr0.055Ti0.945）O3 doped with extra 0.04% Na2CO3, having a d33 as high as 195 pC/N. It was found that the extra Na in the range up to 0.04% played the soft additive role, but in the range over 0. 04%, it played the hard additive role. Why the extra Na had such characteristic was theoretically explained. In order to reduce the dielectric loss, the effect of （Ce, Mn） dopants on the properties of 0.94（Na0.5 Bi0.5 ）TiO3-0.06Ba（Zr0.055 Ti0.945 ） O3 doped with extra 0.04 % Na2CO3 was studied.

关 键 词：无铅压电陶瓷 介电常数 介电损耗 相变 

分 类 号：TM282[一般工业技术—材料科学与工程]