摘要
以Bi2O3、ZnO和Nb2O5粉末为原料,通过固相反应合成了以(Bi1.5Zn0.5)(Zn0.5Nb1.5)O7(BZN)为主晶相的陶瓷。分别以液相包覆法和固相混合法引入助烧剂B2O3降低BZN的烧结温度。研究了B2O3对BZN陶瓷的烧结和介电性能的影响。结果表明,液相包覆B2O3后,BZN陶瓷的烧结温度从1100℃降至900℃。H3BO3溶液的浓度为0.9 mol/L,900℃烧结3 h所制BZN陶瓷的介电性能良好:εr=150,Q×f=228,τf=-362 ppm/℃。
（Bi1.5Zn0.5）（Zn0.5 Nbl.5 ）07 （BZN） main phase are prepared by solid phase reaction using Bi2O3, ZnO and Nb2O5 as raw material. B2O3 was introduced by liquid coating technology and solid phase mix method in the BZN ceramic specimen to reduce its sintering temperature. The effects of B2O3 doping on the sintering and dielectric properties of BZN were studied. The results show that liquid coating with B2O3 could decrease the sintering temperature of BZN ceramics from 1100 ℃ to 900 ℃. The BZN ceramic composite could be sintered well at 900 ℃ for 3 h when 0.9 mol/L H3BO3 was added and showed good dielectric properties of ετ=150,Q×f=228,τf=-362ppm/℃
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2014年第5期1243-1246,1262,共5页
Journal of Synthetic Crystals
基金
河南省教育厅项目基金(12A430001)
河南城建学院项目基金(2014JYB010)
关键词
微波介质陶瓷
低温烧结
介电性能
液相烧结
液相包覆
microwave dielectric ceramic
low temperature sintering
dielectric property
liquid phasesintering
liquid coating
