摘要
通过传统固相法合成了四元系压电陶瓷材料Pb0.95Sr0.05(Zr1-xTix)O3-Pb(Mn1/3Sb2/3)O3-Pb(Zn1/3Nb2/3)O3(简称PZT-PMS-PZN),用XRD技术分析了陶瓷的相结构,研究了不同Zr/Ti比对该材料的机械品质因数Qm、机电耦合系数KP、压电常数d33、介电常数rε以及介电损耗tanδ的影响.结果表明,当0.46≤x≤0.50时,材料四方与菱方两相共存,即为材料的准同型相界.当x=0.48且烧结温度为1150℃时,陶瓷具有优良的综合电学性能.其主要性能参数为:εr=1 761,tanδ=0.002 8,Qm=1300,d33=351pC/N,Kp=0.58.该材料可作为大功率压电陶瓷变压器的候选材料.
Piezoelectric ceramics with the compositions of Pb0.95Sr0.05 （Zr1-xTix ）O3 -Pb（Mn1/3Sb2/3） 03-Pb（Zn1/3Nb2/3）03（PZT-PMS-PZN） ceramics were successfully prepared by a conventional mixedoxide method. The effects of Zr/-Ti ratio varying in the vicinity of the morphotropic phase boundary （MPB） on the phase structure and electrical properties of PZT-PMS-PZN ceramics have been investigated. The results of XRD indicate that the MPB is a broad composition range of 0.46≤x≤ 0.50. When x is at 0.48, the piezoelectric ceramics have excellent properties, which are listed as follows： εr= 1 761, tanδ=0.0 028, Qm= 1 300, d33 = 351pC/N, Kp=0.58. The results show that the ceramics are very promising materials for high power piezoelectric transformer applications.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第1期74-76,86,共4页
Journal of Shaanxi Normal University：Natural Science Edition
