利用海藻酸钠特殊的螯合性能,以CaCl2为固化剂,制备出了内部具有高度定向孔道的3-1型多孔PZT陶瓷.本实验配制固含量为10wt％的PZT陶瓷浆料,可以制备出孔径为200 μm,孔隙率高达85％的多孔PZT陶瓷.研究了CaO含量对多孔PZT陶瓷电学性能和显微硬度的影响规律.当CaO含量为0.62wt％时,其纵向压电系数(d33)为120,介电常数(ε)可达820,较CaO含量为2.02wt％时,分别提高了84％和51％.随着CaO含量的增大,多孔PZT陶瓷的显微硬度明显提高,当CaO含量为2.02wt％时达到最大值0.98 GPa.
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