硅酸盐学报2009，Vol.37Issue(11)：1933-1937,5.
BaCu(B_2O_5)助烧剂对2.5ZnO-2.5Nb_2O_5-5TiO_2微波介质陶瓷介电性能的影响
EFFECTS OF BaCu(B_2O_5)ADDITIVE ON DIELECTRIC PROPERTIES OF 2.5ZnO-2.5Nb_2O_5-5TiO_2 MICROWAVE DIELECTRIC CERAMICS
摘要
Abstract
The effects of BaCu(B_2O_5)(BCB)addition on the microstructure and microwave dielectric properties of 2.5ZnO-2.5Nb_2O_5-5TiO_2(ZNT)ceramics were investigated.The bulk density of the specimens is higher than that of pure ZNT specimens when the sintering temperature is above 900℃.The dielectric constant εr increases initially and then decreases slightly with the increase of BCB content.The product of quality factor and resonance frequency of Qf value degrades with the addition of BCB because of the presence of the liquid phase in the sintering.The temperature coefficient of the resonance frequency Tf is effectively lowered compared with the pure ZNT specimens.The 3% in mass BCB-added ZNT ceramics sintered at 900℃ for 3 h have good dielectric propertiesof ε_r=48,Qf=15258GHz,and τ_f=41×10~(-6)/℃at 5 GHz.关键词
微波介电陶瓷/氧化锌-氧化铌-氧化钛/介电性能/液相烧结Key words
microwave dielectric ceramics/zinc oxide-nobium oxide-titania/dielectric properties/liquid phase sintering分类
动力与电气工程引用本文复制引用
孙露,黄金亮,路晓辉,韩香菊..BaCu(B_2O_5)助烧剂对2.5ZnO-2.5Nb_2O_5-5TiO_2微波介质陶瓷介电性能的影响[J].硅酸盐学报,2009,37(11):1933-1937,5.基金项目
河南省杰出青年基金(074100510008):河南省国际科技合作计划(0346620012 （074100510008）
河南省科技发展计划(092300410135)资助项目. （092300410135）
