Abstract A kind of fine scale 2-2-2 PZT/epoxy piezoelectric composites consisting of PZT phase of uniform and Gaussian distribution were designed and prepared by cutting and filling method. The effects of thickness parameter on piezoelectric, dielectric and electromechanical coupling properties of the piezoelectric materials were investigated. The results show that piezoelectric composites exhibit large piezoelectric voltage constant and thickness electromechanical coupling coefficient. The relative permittivity, piezoelectric strain constant and planner electromechanical coupling coefficient increase with increasing the thickness of supporting base, and the piezoelectric voltage constant and thickness electromechanical coupling coefficient show the opposite variation. The Gaussian PZT/epoxy composite has larger piezoelectric voltage constant and thickness electromechanical coupling coefficient than the uniform PZT/epoxy composite.

中文翻译：

---

用于高频应用的精细2-2-2 PZT/环氧树脂压电复合材料的结构设计和性能

摘要 采用切割填充法设计制备了一种由均匀、高斯分布的PZT相组成的精细2-2-2 PZT/环氧树脂压电复合材料。研究了厚度参数对压电材料的压电、介电和机电耦合特性的影响。结果表明，压电复合材料具有较大的压电电压常数和厚度机电耦合系数。相对介电常数、压电应变常数和平面机电耦合系数随着支撑基座厚度的增加而增加，而压电电压常数和厚度机电耦合系数则呈现相反的变化。