Pb(Zn_(1/3)Nb_(2/3))O_3基复相陶瓷的显微结构发展与介电性能的关系  

The Relationship between Microstructural Development and Dielectic Properties of Pb(Zn 1/3 Nb 2/3 )O 3-based Composite Ceramics

作　　者：岳振星[1] 李振荣[1] 

机构地区：[1]西安交通大学电子材料与器件研究所

出　　处：《硅酸盐通报》1999年第1期26-30,共5页Bulletin of the Chinese Ceramic Society

摘　　要：采用混合烧结法在ＰＺＮ－ＢＴ－ＰＴ系统中制备了温度稳定ＰＺＮ基复相陶瓷，借助ＳＥＭ、ＴＥＭ和介电温谱研究了复相陶瓷的显微结构发展与介电性能的关系，结果表明，复相陶瓷以溶解－沉淀机制进行晶粒生长，伴随该过程发生两相间固溶反应，使介电常数的温度稳定性降低。PZN-based composite ceramics were prepared in PZN-BT-PT system by mixed-sintering method.The dependence of dielectric properties on microstructural development for PZN composite ceramics sintered under various conditions were studied using SEM,TEM and the measurements of dielectric properties.The results revealed that the grains grow by solution-precipitation mechanism.During this process,the solid-solution reaction between two phases takes place by the formation of the growth layer on the initial particle.The amount of solid solution between two phases increases as sintering temperature increases and soaking time is prolonged.This leads to reduce the stability of dielectric properties on temperature for PZN composite ceramics.

关 键 词：铌锌酸铅 铁电体 显微结构 介电性 复合陶瓷 

分 类 号：TQ174.758[化学工程—陶瓷工业] TM221.014[化学工程—硅酸盐工业]