PBSZT大功率压电陶瓷老化性能的研究  

Study on Aging of PBSZT Piezoelectric Ceramics for High-power Applications

作　　者：晏伯武[1] 

机构地区：[1]黄石理工学院计算机学院,湖北黄石435003

出　　处：《压电与声光》2009年第2期240-243,共4页Piezoelectrics & Acoustooptics

基　　金：国家"八六三"基金资助项目(No.2004AA32G090)

摘　　要：为探索Pb1-x-yBaxSry(Sn1/3Nb2/3)0.06(Zn1/3Nb2/3)0.06Ti0.44Zr0.44O3+0.5%MnO2+0.5%Sb2O3(质量分数)大功率铅基压电陶瓷材料的老化机理,进行了A位置换、CeO2掺杂的实验研究。实验结果表明,x(Ba)=5%和x(Sr)=5%的A位复合置换陶瓷得到较好的介电老化性能,一定老化时间内其介电常数变化率为13.9%,添加w(CeO2)=0.7%的掺杂有利于老化性能的提高,一定老化时间内其介电常数变化率为2.2%。对原体系掺杂w(Mn(NO3)22)=0.2%、w(Sb2O32)=0.5%,它们显著地优化其老化性能。For the investigation on aging mechanics of piezoelectric ceramic materialsPb1-x-yBaxSry（Sn1/3Nb2/3）0.06（Zn1/3Nb2/3）0.06Ti0.44Zr0.4O3＋0.5%MnO2＋0.5%Sb2O3, the experiments of A-site substitution and CeO2 doping were carried on. The results show that A-site substitution with 5% Ba and 5% Sr come with better dielectric constant aging properties, and addition of 0.7 %CeO2 doping come with much better aging properties. The ceramic specimens from the different doping concentration of Mn（NOa ）2 and Sb2O3 come with different aging properties as well.

关 键 词：压电陶瓷 介电常数 老化 介电损耗 

分 类 号：TN304[电子电信—物理电子学]