硅酸盐学报

环境湿度对1–3型水泥基压电复合材料性能的影响

作者：程新黄世峰胡雅莉王守德

单位：济南大学材料学院济南大学材料学院济南大学材料学院济南大学材料学院济南250022 济南250022 济南250022 济南250022

分类号：TB332

出版年,卷(期):页码：2006,34(5):626-629

DOI：

摘要：

用切割–填充法,以硫铝酸盐水泥为基体,铌镁锆钛酸铅[Pb(Mg1/3Nb2/3)O3·PbTiO3·PbZrO3](PMN)为压电功能体制备了1–3型硫铝酸盐水泥基压电复合材料。研究了环境湿度对1–3型水泥基压电复合材料的压电性能和介电性能的影响。结果表明:随着相对湿度的增大,压电电压常数g33与机械品质因数Qm呈非线性减小。湿度对压电应变常数d33以及机电耦合系数Kp和Kt的影响较小。在低频和高频段,当相对湿度低于85%时,介电常数εr基本不受湿度的影响,表现出良好的介频稳定性。

Composites with 1–3 connectivity were fabricated from Pb(Mg1/3Nb2/3)O3.PbTiO3.PbZrO3(PMN)and sulphoaluminate cement by the cut-filling process. Piezoelectric and dielectric properties of the composites at varied relative humidity were investigated. The results show that the piezoelectric voltage factor g33 and the mechanical quality Qm decrease nonlinearly with the relative humidity increasing. Compared with the piezoelectric voltage factor, the humidity has little effect on the piezoelectric strain factor d33 and the electromechanical coupling coefficients Kp and Kt. At lower and higher frequencies, the dielectric constant εr is nearly independent of the humidity below 85%, which indicates good dielectric-frequency stability.

基金项目：

国家自然科学基金(50502017);; 山东省优秀中青年科学家科研奖励基金(03BS060)资助项目。

作者简介：

参考文献：

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