【摘要】 本文制备了含不同粒度锆钛酸铅(PZT)的水泥基压电复合材料。其中,PZT压电陶瓷粉体采用球磨法制得,其平均粒度范围为3~482μm。研究发现,PZT粒度对复合材料的压电、介电性能以及力学性能有重要影响。随着PZT陶瓷相粒度的增大,复合材料的压电应变常数(d33)和介电常数(εr)升高,但复合材料的老化稳定性变差、介电损耗(tanδ)增加、弯曲强度降低。更多还原

【Abstract】 The cement based piezoelectric composites containing lead zirconate titanate(PZT) with different particle size were prepared.The PZT particles with different average particle size ranging from 3 μm to 482 μm were obtained by ball milling.The results indicated that the PZT particle size plays important role on the piezoelectric,dielectric and mechanical properties of PZT/cement composites.As the PZT particle size increasing,the piezoelectric stain factor(d33) and the dielectric constant(εr) increase,while the aging stability is damages,the dielectric loss(tanδ) increases and the bending strength of the composites decreases.更多还原