Effects of BaCu(B2O5) addition on sintering temperature and microwave dielectric properties of Ba5Nb4O15-BaWO4 ceramics

doi:10.1088/1674-1056/23/4/047801

中国物理B ›› 2014, Vol. 23 ›› Issue (4): 47801-047801.doi: 10.1088/1674-1056/23/4/047801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Effects of BaCu(B₂O₅) addition on sintering temperature and microwave dielectric properties of Ba₅Nb₄O₁₅-BaWO₄ ceramics

贾瑞龙, 苏桦, 唐晓莉, 荆玉兰

State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

收稿日期:2013-06-18 修回日期:2013-09-30 出版日期:2014-04-15 发布日期:2014-04-15
基金资助:
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), and Science Fund from the Science and Technology Department of Sichuan Province, China (Grant No. 2013GZX0144).

Effects of BaCu(B₂O₅) addition on sintering temperature and microwave dielectric properties of Ba₅Nb₄O₁₅-BaWO₄ ceramics

Jia Rui-Long (贾瑞龙), Su Hua (苏桦), Tang Xiao-Li (唐晓莉), Jing Yu-Lan (荆玉兰)

State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

Received:2013-06-18 Revised:2013-09-30 Online:2014-04-15 Published:2014-04-15
Contact: Su Hua E-mail:uestcsh@163.com
About author:78.20.Ci
Supported by:
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), and Science Fund from the Science and Technology Department of Sichuan Province, China (Grant No. 2013GZX0144).

摘要/Abstract

摘要： The effects of BaCu(B₂O₅) (BCB) addition on the microstructure, phase formation, and microwave dielectric properties of Ba₅Nb₄O₁₅-BaWO₄ ceramic are investigated. As a sintering aid, BaCu(B₂O₅) ceramic could effectively lower the sintering temperature of Ba₅Nb₄O₁₅-BaWO₄ ceramic from 1100 ℃ to 950 ℃ due to the liquid-phase effect. Meanwhile, BaCu(B₂O₅) addition effectively improves the densification of Ba₅Nb₄O₁₅-BaWO₄ ceramic and significantly influences the microwave dielectric properties. X-ray diffraction analysis reveals that Ba₅Nb₄O₁₅ and BaWO₄ coexist with no crystal phase of BaCu(B₂O₅) in the sintered ceramics. The Ba₅Nb₄O₁₅-BaWO₄ ceramics with 1.0 wt% BaCu(B₂O₅) sintered at 950 ℃ for 2 h presents good microwave dielectric properties of ε_r=19.0, high Q× f of 33802 GHz and low τ_f of 2.5 ppm/℃.

关键词: low-temperature co-fired ceramics, composite ceramics, BaCu(B₂O₅) (BCB)

Abstract: The effects of BaCu(B₂O₅) (BCB) addition on the microstructure, phase formation, and microwave dielectric properties of Ba₅Nb₄O₁₅-BaWO₄ ceramic are investigated. As a sintering aid, BaCu(B₂O₅) ceramic could effectively lower the sintering temperature of Ba₅Nb₄O₁₅-BaWO₄ ceramic from 1100 ℃ to 950 ℃ due to the liquid-phase effect. Meanwhile, BaCu(B₂O₅) addition effectively improves the densification of Ba₅Nb₄O₁₅-BaWO₄ ceramic and significantly influences the microwave dielectric properties. X-ray diffraction analysis reveals that Ba₅Nb₄O₁₅ and BaWO₄ coexist with no crystal phase of BaCu(B₂O₅) in the sintered ceramics. The Ba₅Nb₄O₁₅-BaWO₄ ceramics with 1.0 wt% BaCu(B₂O₅) sintered at 950 ℃ for 2 h presents good microwave dielectric properties of ε_r=19.0, high Q× f of 33802 GHz and low τ_f of 2.5 ppm/℃.

Key words: low-temperature co-fired ceramics, composite ceramics, BaCu(B₂O₅) (BCB)

中图分类号: (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

78.20.Ci

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, 23(4): 47801-047801.

Jia Rui-Long (贾瑞龙), Su Hua (苏桦), Tang Xiao-Li (唐晓莉), Jing Yu-Lan (荆玉兰). Effects of BaCu(B₂O₅) addition on sintering temperature and microwave dielectric properties of Ba₅Nb₄O₁₅-BaWO₄ ceramics[J]. Chin. Phys. B, 2014, 23(4): 47801-047801.

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Effects of BaCu(B₂O₅) addition on sintering temperature and microwave dielectric properties of Ba₅Nb₄O₁₅-BaWO₄ ceramics

Effects of BaCu(B₂O₅) addition on sintering temperature and microwave dielectric properties of Ba₅Nb₄O₁₅-BaWO₄ ceramics

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