Zn和Nb对BaO-TiO_2系统微波陶瓷介电性能的影响  

Effects of Zn/Nb Dopant on Dielectric Properties of BaO-TiO_2 Microwave Ceramics

作　　者：刘丹丹[1] 吴顺华[1] 赵玉双[1] 邢磊 熊文 

机构地区：[1]天津大学电子信息工程学院,天津300072 [2]潮州三环电子有限公司,广东潮州515646 [3]成都宏明电子股份有限公司,四川成都610058

出　　处：《电子元件与材料》2003年第9期11-14,共4页Electronic Components And Materials

摘　　要：研究了添加ZnO 和Nb2O5的BaO-TiO2系统微波陶瓷。XRD表明其主晶相是Ba2Ti9O20(B2T9)/BaTi4O9(BT4)。加入ZnO 和Nb2O5,由Zn2+ 和Nb5+共同取代Ti4+,作为施主受主杂质,达到电价平衡,降低了烧结温度,改进了介电性能。该系统微波瓷料既可用于制造滤波器,也可用于制造多层陶瓷电容器(MLCC)。实验表明其介电性能如下:εr =37、Q =14 000、αC = 10×106℃1(1 MHz)。ZnO and Nb2O5 doped microwave ceramics of BaO-TiO2 were investigated. XRD showed that the crystal phases are mainly Ba2Ti9O20(B2T9)/BaTi4O9(BT4). To substitute for Ti4+, ZnO and Nb2O5 were added as donor and receiver ions. Thus, balance of electric valence was obtained, sintering temperature lowed and dielectric property improved. The ceramic material can be used for filters and MLCCs. εr is 37, Q 14 000 andαC 10 106℃6 at 1 MHz.

关 键 词：微波陶瓷 介电性能 滤波器 多层陶瓷电容器 

分 类 号：TM28[一般工业技术—材料科学与工程]