PNW-PMS-PZT压电陶瓷的制备及性能研究

A Study of Properties and Preparation for PNW - PMS - PZT Piezoelectric Ceramics

采用传统陶瓷工艺制备了PNW-PMS-PZT四元系压电陶瓷,分析了其粉体的相结构组成,研究了室温下烧结温度和组分对表观密度ρ、相对介电常数εr、介电损耗tanδ,居里温度Tc和压电常数d33的影响,实验表明在室温下随着PZT含量的增加εr、Tc、d33逐渐增大,tanδ逐渐减小;随着烧结温度的提高,ρ总体增大,εr、d33增大,tanδ逐渐减少,Tc变化不明显。制得了εr=2200,tanδ=0.0062,d33=390pC/N,Tc=235℃的压电材料。

The piezoelectric ceramics (PNW - PMS - PZT) are prepared by the traditional ceramics process, the phase structure of powders calcined at 850°C is analyzed. The influences of sintering temperature and different components on apparent density ρ, relative dielectric constant εr, dielectric loss tanδ, Curie temperature Tc and piezoelectric constant d_(33) at room temperature are studied. The results show that at room temperature with the increase of the amount of PZT solid solution in system, εr , Tc and d_(33) are gradually increased, tanδ is gradually decreased; with the increase of the sintering temperature, ρ is increased in general, εr and d_(33) are increased, tanδ is gradually decreased but the change of Tc is not obvious. At last, the piezoelectric material with ε_r=2200, tanδ=0.0062, T_c=235°C, d_(33)=390pC/N is obtained.