0-3表面复合型BaTiO_(3)-ZnO压电复合陶瓷的压电性能有限元分析  

Finite Element Analysis of Piezoelectric Properties of Surface 0-3 Type BaTiO_(3)-ZnO Piezoelectric Composite Ceramics

作　　者：李安江 王媛玉 LI Anjiang;WANG Yuanyu(College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《贵州大学学报（自然科学版）》2023年第1期57-61,共5页Journal of Guizhou University:Natural Sciences

基　　金：贵州大学研究生创新人才计划资助项目(2020)。

摘　　要：为了从多物理场耦合的角度解释弥散分布于其中的ZnO非均匀局域结构对陶瓷基体压电性能的增强机理,运用COMSOL Multiphysics结构力学模块中的压电设备模块,对ZnO复合表面0-3型BaTiO_(3)压电复合陶瓷进行有限元仿真分析。结果表明:弥散分布的ZnO非均匀局域结构导致整个样品性能分布不均匀,即在ZnO附近,同时获得小的压电应力和较大的压电极化强度;通过增加样品的孔数目和弥散度等方式,可以改善模拟的BaTiO_(3)陶瓷性能的不均匀性,进而获得BaTiO_(3)复合陶瓷均匀的增强压电性能。研究结果为BaTiO3陶瓷电性能的优化提供了新思路。In this paper, from the perspective of multi-physical field coupling, the enhancement mechanism of ZnO non-uniform local structure on the piezoelectric properties of ceramic matrix was explained. The piezoelectric device module in COMSOL Multiphysics module was used to conduct finite element simulation analysis on ZnO 0-3 BaTiO_(3)piezoelectric composite ceramics with composite surface. The results showed that the heterogeneous local structure of the dispersed ZnO led to the uneven distribution of the performance of the whole sample, that is, near the ZnO, the small piezoelectric stress and large piezoelectric polarization intensity were obtained simultaneously. By increasing the number of holes and the dispersion of the sample, the heterogeneous properties of the simulated BaTiO_(3)ceramics could be improved, and the uniform enhanced piezoelectric properties of the BaTiO_(3)composite ceramics could be obtained. These results provide a new idea for the optimization of the electrical properties of BaTiO_(3)ceramics.

关 键 词：COMSOL Multiphysics BaTiO_(3)材料 ZNO 非均匀局域结构 压电性能 

分 类 号：TQ174.1[化学工程—陶瓷工业]