知识与财富的链接
研究了铌镁酸铅铌锰酸铅锆钛酸铅(PMMN-PZT)四元系统压电陶瓷材料的配方、工艺条件及对各项性能指标的影响。在相界附近研究了四种不同配方的PMMN-PZT压电陶瓷,通过SEM观察、性能测试、居里温度表征等手段,确定了较佳的配方组成、材料的烧结温度及极化制度。研究表明:所得PMMN-PZT压电陶瓷的较佳组成为0.06Pb(Mg1/3Nb2/3)O3-0.06Pb(Mn1/3Nb2/3)O3-0.44PbZrO3-0.44PbTiO3+0.2%质量分数的CeO2,适宜的烧结温度为1200 ,极化电场为3000V/mm,极化温度为150 。所制备的压电陶瓷的相对介电常数33T/0为1100;介质损耗tg为0.004;压电常数d33为290?0-12C/N,g33为28.0?0-3Vm/N;机电耦合系数kP为0.55;机械品质因数Qm为1200。
Studied are the composition, experimental process of piezoelectric ceramics of Pb(Mg1/3 Nb2/3)O3-Pb(Mn1/3 Nb2/3)O3-PbZrO3-PbTiO3 (PMMN-PZT) and their influence on various properties. Four different compositions of PMMN-PZT around its phase boundary were investigated. Optimal composition, sintered temperature and polarizing mechanism were determined by electric property tests, SEM examination, Curie temperature measurement, etc. The optimum composition is 0.06Pb(Mg1/3Nb2/3)O3-0.06Pb(Mn1/3Nb2/3)O3-0.44PbZrO3-0.44PbTiO3+0.2wt%CeO2; sintered temperature 1 200 ; polarizing field 3 000 V/mm; polarizing temperature 150 . Of the the piezoelectric ceramics, 33T/0 is 1 100, tg 0.004; d33 290?0-12 C/N, g33 28.0?0-3 Vm/N, kp 0.55, Qm 1 200.
