颗粒包覆法制备X7R特性PZN基复相陶瓷  

Preparation of Ph(Zn_(1/3)Nb_(2/3))O_3-based Diphasic Ceramics with X7R Character by Particle-coating Method

作　　者：岳振星[1] 王晓莉[2] 张良莹[2] 姚熹[2] 

机构地区：[1]清华大学材料科学与工程系,北京100084 [2]西安交通大学电子材料与器件研究所,西安710049

出　　处：《无机材料学报》1999年第1期66-70,共5页Journal of Inorganic Materials

摘　　要：采用溶胶-凝胶颗粒包覆技术在Ph（Zn1／3Nb3／3）O3基因溶体颗粒表面形成一层低熔硼硅包覆物，以包覆后的两种固溶体为高低温组元制备复相陶瓷．结果表明；颗粒包覆物可显著降低复相陶瓷的烧结温度，并有效抑制两相固溶反应，获得了低烧结温度、高介电常数。A novel sol-gel particle-coating technique was developed to form a thin glassy layer on the surfaceof PZN particles. Two types of powders with different Curie temperatures were used as hightemperature constituent and low-temperature one to prepare PZN--based composite ceramics. APZN-based diphasic ceramic with X7R character and high dielectric constant was successfully obtained at low sintering temperature. The results show that the particle-coating method is effectiveto lower sintering temperature of the composite ceramics and suppress the reaction between thetwo starting constituents.

关 键 词：铌锌酸铅 颗粒包覆法 复合材料 PZN基 X7R 

分 类 号：TQ174.758[化学工程—陶瓷工业]