Y系掺杂的TiO_2压敏陶瓷性能研究  

Study on Y-based Doped on TiO_2 Ceramic Varistors

作　　者：季惠明[1] 孙清池[1] 王丹阳[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《硅酸盐通报》2002年第5期58-61,共4页Bulletin of the Chinese Ceramic Society

摘　　要：通过在TiO2 压敏陶瓷制备过程中引入Y系作为受主掺杂 ,讨论了以Y取代Bi受主掺杂对双功能TiO2 压敏陶瓷性能的影响。实验结果表明 :以Y系掺杂的Ti Nb基压敏陶瓷可获得较好的低的压敏电压与高的电容双功能特性。其中 ,以Y +Cu为受主掺杂剂 ,SiO2 为烧结助剂的配方 ,在 1 30 0℃温度下烧结 ,获得压敏电压V1mA=9.4V/mm ,非线性系数α=4 .8,介电常数ε=2 1 30 0 ,介电损耗tanδ=0 .0 9较优异的压敏介电性能。TiO 2 ceramic varistors doped with Y-based as acceptors were prepared, and the influences of acceptors on characteristics were systematically discussed.The experimental results indicated that Y-based TiO 2 cera mic varistors exhibit excellent varistor characteristics and dielectric properties.The samples,with Y+Cu as acceptor and SiO 2 as liquid-phase sintering additives,and sintered at 1380℃,obtained varistor voltage V 1mA=9.4V/mm,current-voltage nonlinear coefficient α=4.8,while effective dielectric constant ε=21300 and the dissipation factor tg δ=0.09 at 1KHz respectively,and little volatility are found in Y-based varistors.

关 键 词：性能 研究 TIO2压敏陶瓷 Y系掺杂 Bi系掺杂 二氧化钛 

分 类 号：TQ174.758[化学工程—陶瓷工业]