摘要
由Nb5+,Sb3+置换锆钛酸铅的B位离子,制备了用作大功率水声换能器材料的铌锑-锆钛酸铅系压电陶瓷。采用固相法合成了0.02Pb(Sb1/2Nb1/2)O3-0.98PbZr1-xTixO3(x=0.44～0.49)粉体。通过X射线衍射及扫描电镜分析,研究了不同锆钛比和烧结温度对陶瓷的相组成、显微结构和介电、压电性能的影响。结果表明:当合成温度为900℃时,获得的粉体的主晶相为钙钛矿结构。当Zr/Ti摩尔比为51/47,烧结温度为1230℃时,各项性能达到最佳值,介电常数εT33/ε0为1945,介电损耗tanδ为0.019,压电常数d33为425pC/N,机电耦合系数Kp为0.65,Curie温度θC为352℃。铌锑-锆钛酸铅系压电陶瓷的烧结温度范围宽,具有较强的工艺操作性且θC高。
0.02Pb(Sb1/2Nb1/2)O3-0.98Pb(Zr1-xTix)O3(x=0.44-0.49) piezoelectric ceramics were prepared by the conventional solid solution method using Nb5+,Sb3+substitution of B-site ions of lead zirconate-titanate(PZT) for use in high power underwater trans-ducers.The effects of the Zr/Ti mole ratio and sintering temperature on its phase composition,microstructure,dielectric and piezo-electric properties were investigated.The results show that powder obtained at a calcination temperature of 900 ℃ has a pure perovskitic...
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2009年第2期238-242,共5页
Journal of The Chinese Ceramic Society
关键词
铌锑-锆钛酸铅系压电陶瓷
介电常数
压电常数
CURIE温度
lead niobium-stibium zirconate titanate
dielectric constant
piezoelectric constant
Curie temperature
