| Effects of BaCu（B2O5 ） addition on sintering temperature and microwave dielectric properties of Ba5Nb4O15–BaWO4 ceramics |
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| 引用本文： | 贾瑞龙,苏桦,唐晓莉,荆玉兰.Effects of BaCu（B2O5 ） addition on sintering temperature and microwave dielectric properties of Ba5Nb4O15–BaWO4 ceramics[J].中国物理 B,2014(4):582-585. |
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| 作者姓名： | 贾瑞龙 苏桦 唐晓莉 荆玉兰 |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant Nos.51372031,61171047,51132003,and 61271038);the Program for New Century Excellent Talents in University,China(Grant No.NCET-12-0090);Science Fund from the Science and Technology Department of Sichuan Province,China(Grant No.2013GZX0144) |
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| 摘 要： | The effects of BaCu(B2O5)(BCB) addition on the microstructure, phase formation, and microwave dielectric properties of Ba5Nb4O15–BaWO4ceramic are investigated. As a sintering aid, BaCu(B2O5) ceramic could effectively lower the sintering temperature of Ba5Nb4O15–BaWO4ceramic from 1100?C to 950?C due to the liquid-phase effect. Meanwhile,BaCu(B2O5) addition effectively improves the densification of Ba5Nb4O15–BaWO4ceramic and significantly influences the microwave dielectric properties. X-ray diffraction analysis reveals that Ba5Nb4O15and BaWO4coexist with no crystal phase of BaCu(B2O5) in the sintered ceramics. The Ba5Nb4O15–BaWO4ceramics with 1.0 wt% BaCu(B2O5) sintered at 950?C for 2 h presents good microwave dielectric properties of εr = 19.0, high Q × f of 33802 GHz and low τfof2.5 ppm/?C.
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