环境湿度对1–3型水泥基压电复合材料性能的影响  

EFFECT OF HUMIDITY ON PERFORMANCE OF 1-3 CEMENT-BASED PIEZOELECTRIC COMPOSITES

作　　者：程新[1] 黄世峰[1] 胡雅莉[1] 王守德[1] 

机构地区：[1]济南大学材料学院,济南250022

出　　处：《硅酸盐学报》2006年第5期626-629,635,共5页Journal of The Chinese Ceramic Society

基　　金：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。

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.

关 键 词：1-3型水泥基压电复合材料 相对湿度 压电性能 介电性能 机电耦合系数 

分 类 号：TB332[一般工业技术—材料科学与工程] TU525[建筑科学—建筑技术科学]