无机材料学报

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颗粒包覆法制备X7R特性PZN基复相陶瓷

岳振星a; 王晓莉b; 张良莹b; 姚熹b   

  1. 清华大学材料科学与工程系; 北京 100084; 西安交通大学电子材料与器件研究所; 西安 710049
  • 收稿日期:1998-03-10 修回日期:1998-04-15 出版日期:1999-02-20 网络出版日期:1999-02-20

Preparation of Ph(Zn1/3Nb2/3)O3-based Diphasic Ceramics with X7R Character by Particle-coating Method

YUE Zhen-Xinga WANG Xian-Lib ZHANG Liang-Yingb YAO Xib   

  1. aDepartment of Materials Science and Engineering; TSinghua University Beijing 100084 China; bElectronic Materials Research Laboratory; Xi an Jiaotong University Xi an 710049 China
  • Received:1998-03-10 Revised:1998-04-15 Published:1999-02-20 Online:1999-02-20

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、具有X7R温度特性的Ph(Zn1/3Nb2/3)O3基复相陶瓷

关键词: 铌锌酸铅, 复相陶瓷, 颗粒包覆法, 介电性能, X7R温度特性

Abstract: A novel sol-gel particle-coating technique was developed to form a thin glassy layer on the surface of PZN particles. Two types of
powders with different Curie temperatures were used as high-temperature constituent and low-temperature one to prepare PZN-based composite ceramics.
A PZN-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 effective to lower sintering temperature of the composite ceramics and suppress the reaction
between the two starting constituents.

Key words: lead zinc niobate, diphasic ceramics, particle-coating technique, dielectric properties, X7R character

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