CaO-SrO-TiO_2-Bi_2O_3系统介电性能研究  

STUDY ON DIELECTRIC PROPERTIES OF CaO-SrO-TiO_2-Bi_2O_3 SYSTEM

作　　者：肖谧[1] 李玲霞[1] 王洪儒[1] 崔靖杰[1] 吴霞宛[1] 

机构地区：[1]天津大学电子信息学院,天津300072

出　　处：《硅酸盐学报》2000年第3期294-298,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金!资助项目 (5 9782 0 0 0 3)

摘　　要：对CaO -SrO -TiO2 -Bi2 O3 四元系统的介电性能进行了研究 .SrTiO3 和CaTiO3 的不同配比可合成具有不同介电常数和温度系数的陶瓷材料 .Bi2 O3 的添加可改善材料的介电常数和温度系数 ,添加MnO2 和CeO2 可进一步改善瓷料的性能 .通过预先合成SrTiO3和CaTiO3 熔块 ,按照适当的配比混合后加入Bi2 O3,并添加适量的添加剂 ,获得了一系列性能优良的高频高介MLC陶瓷材料 ,其MLC适用性良好 .The dielectric properties of CaO-SrO-TiO 2-Bi 2O 3 system were studied in this paper. Both SrTiO 3 and CaTiO 3 present perovskite structure. They have high permittivities and α ε (absolute value). In the experiments, SrTiO 3 and CaTiO 3 were produced at first, then Bi 2O 3 was mixed with them. In the end, additives were added into the system. With proper addition of the additives, a dielectric material with excellent properties has been obtained.

关 键 词：钙钛矿结构 高频 介电常数 四元系统 MLC陶瓷 

分 类 号：TQ174.75[化学工程—陶瓷工业] TQ174.13[化学工程—硅酸盐工业]