分散剂对PNN-PZT压电陶瓷组织与性能的影响

Effect of Dispersing Agent on Microstructure and Properties of Piezoelectric Ceramics

压电陶瓷作为能够将机械能和电能相互转换的功能陶瓷在国防领域以及民用领域得到了非常广泛的应用。当今为了追求更高性能的压电陶瓷材料,世界各国的研究人员都将注意力由压电陶瓷材料的研究转向了压电陶瓷的制作工艺。本课题研究的目的主要是在传统的压电陶瓷制备工艺的基础上,通过在球磨过程中加入分散剂制备出性能参数更高更为稳定的压电陶瓷材料。本次实验研究发现,柠檬酸铵的分散效果较为显著,当采用烧结温度1200℃,柠檬酸铵分散剂浓度15%时能得到一个综合性能都比较稳定的压电陶瓷材料,其压电常数为603pC/N,机电耦合系数为0.536,介电常数为5354,介电损耗为2.197%。

Piezoelectric ceramics as to mechanical energy and electrical energy transformation of functional ceramics in the field of national defense and civil field got very extensive application. In pursuit of higher performance of piezoelectric ceramic materials today, researchers around the world will be part of the attention from the piezoelectric ceramic materials to the production technology of the piezoelectric ceramic. The purpose of this research is mainly on the basis of the traditional prepa- ration technology of piezoelectric ceramic, in the milling process by adding dispersant prepared by the performance parameters and more stable of piezoelectric ceramic materials. This experiment studies have found the dispersion effect of ammonium citrate was more obvious. When the sintering tempera- ture of 1200℃, ammonium citrate dispersant concentration of 5% to get a comprehensive performance of piezoelectric ceramic materials that are better, and d33=603pC/N, Kp = 0. 536, ε=5354, tan3 =2. 197%.