以偏氟乙烯-三氟乙烯(P(VDF-TrFE))共聚物为基体,锆钛酸铅(PZT)铁电颗粒为功能相,钽铌酸钾(KTN)颗粒为增强相,制备了0-3型(PZT,KTN)/P(VDF-TrFE)三相铁电复合材料.利用SEM及EDAX技术,分析了复合材料的显微结构及PZT和KTN相的分布.测试了具有不同KTN体积分数的复合材料的电性能.实验结果表明:PZT和KTN相的颗粒分布均匀,存在少量的团聚体;随KTN体积分数的增加,三相复合材料的极化漏电流Ⅰ、介电常数εr和介电损耗tan δ增加,压电系数d33降低,而热释电系数P3先增加后降低,但其d33和P3均高于具有相同PZT体积分数的PZT/P(VDF-TrFE)两相复合材料.
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