PREPARATION AND PROPERTIES OF PZN-PZT PIEZOELECTRIC CERAMICS AND PZN-PZT/PVDF PIEZOELECTRIC COMPOSITES
-
摘要: 采用固相烧结法合成了PZN-PZT(铌锌锆钛酸铅)三元系压电陶瓷烧结块材和粉末,并采用XRD、SEM等测试方法对其结构和性能进行了分析。PZN-PZT常压烧结陶瓷具有优良的压电性能,PZN-PZT颗粒粒径在0.5~4 μm之间,颗粒形态不太规整。采用溶液共混法将PZN-PZT粒子均匀分散于PVDF基体中,制备了PZN-PZT/PVDF 0-3型压电复合材料。研究了PZN-PZT质量分数、极化电场等因素对该压电复合材料压电和介电性能的影响。实验结果表明,选用压电活性更高的压电陶瓷粉末进行复合,可有效提高压电复合材料的压电性能。增加PZN-PZT质量分数、提高极化电压均有利于复合材料压电性能的提高。Abstract: Ternary system piezoelectric ceramic materials PZN-PZT and their powders were fabricated using solid state sintered technology. Their structure and properties were studied by XRD and SEM. PZN-PZT ceramics synthesized by the traditional sintered method contain well piezoelectric properties. The diameters of PZN-PZT powders are between 0.5~4μm, and the shape is irregular. PZN-PZT particles were incorporated into PVDF polymer matrix homogeneously through solution blended process to form PZN-PZT/PVDF 0-3 composite thin films. The effects of the ceramic mass fraction and poling electric field on the piezoelectric and dielectric properties of the piezoelectric composites were studied. The results show that the piezoelectric properties of the composites could be improved effectively through choosing the ceramics containing better piezoelectric properties as the filler. The same effects can be made with the increasing of PZN-PZT mass fraction and poling field.
-
点击查看大图
计量
- 文章访问数: 1882
- PDF下载量: 1874
- 被引次数: 0
下载:
