采用传统工艺制备了PbZrO3-PbTiO3-Pb(Fe2/3W1/3)O3-Pb(Mn1/3Nb2/3)O3-BiFeO3(简称PZT-PFW-PMN-BF)四元系压电陶瓷. 研究了MnO2掺杂对PZT-PFW-PMN-BF陶瓷的显微结构、烧结温度、电性能与温度稳定性的影响. 结果表明, 当MnO2的掺杂量为0.10 wt%时, 陶瓷的烧结温度从1020℃降到了950℃, 并得到了较好的综合性能和温度特性, 分别为d33=394 pC/N, Kp =0.54, Qm=1180、εr=1480, △fr/fr25℃=1.68 %和△Kp/Kp25℃=-1.06 %.
The effects of MnO2 addition on the sintering temperature, microstructure, dielectric, piezoelectric properties and the temperature stability of PbZrO3-PbTiO3-Pb(Fe2/3W1/3)O3-Pb(Mn1/3Nb2/3)O3-BiFeO3 (PZT-PFW- PMN-BF) ceramics were investigated. The 0.10 wt% MnO2-added PZT-PFW-PMN ceramics sintered at 950℃ exhibited the favorable piezoelectric and dielectric properties, which were listed as follows: ρ=7.78 g/cm3, d33=394 pC/N, Kp=0.54, Qm=1180, εr=1480, △fr/fr25℃=1.68 % and △Kp/Kp25℃=-1.06 %, respectively.
参考文献
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