PMZN压电陶瓷的工艺研究

SINTERING TECHNOLOGY ON PMZN PIEZOCERAMICS

为了优化Pb(Mn1 3Sb2 3) x(Zn1 3Nb2 3) y(Zr ,Ti) zO3系压电陶瓷的介电性能 ,探讨了不同烧结温度及保温时间对材料性能的影响 ,以期获得材料的最佳制备工艺。实验结果表明 ,此四元系材料具有较宽的烧结温度范围 ,随保温时间的延长材料的性能提高 ,最终达到一个饱和值 ;在 12 0 0～ 12 2 0℃烧结工艺条件下 ,材料的机电耦合系数与机械品质因数最大 ,介电损耗最小 ,介电常数适中 。

Pb(Mn_ 1/3Sb_ 2/3)_x(Zn_ 1/3Nb_ 2/3)_y(Zr,Ti)_zO_3 piezoelectric ceramics were fabricated.The effects of sintering temperature and heat-treatment time on properties were discussed,the optimum preparation technology parameters were obtained.In this case,the ceramics have the highest electromechanical coupling coefficients and mechanical quality factor and the least dielectric loss.It revealed that the PMZN piezoceramics material can be utilized for high-power ultrasound transducer.