| Bi掺杂对Ba_(6-3x)La_(8+2x)(Ti_(0.95)Zr_(0.05))_(18)O_(54)(x=2/3)陶瓷的烧结性能和介电性能的影响 |
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| 引用本文： | 高旭芳,丘泰. Bi掺杂对Ba_(6-3x)La_(8+2x)(Ti_(0.95)Zr_(0.05))_(18)O_(54)(x=2/3)陶瓷的烧结性能和介电性能的影响[J]. 中国有色金属学报, 2010, 20(3) |
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| 作者姓名： | 高旭芳 丘泰 |
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| 作者单位： | 南京工业大学,材料科学与工程学院,南京,210009 |
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| 基金项目： | 国防科工委军品配套项目 |
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| 摘 要： | 采用传统固相反应法制备Ba6-3x(La1-mBim)8+2x(Ti0.95Zr0.05)18O54(x=2/3)微波介质陶瓷,研究Bi掺杂对Ba6-3xLa8+2x(Ti0.95Zr0.05)18O54(x=2/3)陶瓷的烧结性能、微观结构以及介电性能的影响。结果表明:当0m0.4时,Bi3+取代A1位的La3+生成单相类钨青铜型固溶体;当Bi3+的掺杂量超过这个范围时,La0.176Bi0.824O1.5作为第二相出现在固溶体中;Bi3+的掺入使Ba6-3xLa8+2x(Ti0.95Zr0.05)18O54(x=2/3)陶瓷的烧结温度从1400℃降低到1300℃,同时,其介电常数大幅度提高,谐振频率温度系数减小,但品质因数急剧减小;当m=0.05时,1350℃下保温2h烧结获得的陶瓷具有微波介电性能,εr=88.63,Q·f=4395GHz,τf=6.25×10-6/℃。
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| 关 键 词： | 介电性能 Bi掺杂 微波介质陶瓷 类钨青铜结构 |
Effects of Bi doping on sintering and dielectric characteristics of Ba_(6-3x)La_(8+2x)(Ti_(0.95)Zr_(0.05))_(18)O_(54)(x=2/3) ceramics |
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| GAO Xu-fang,QIU Tai. Effects of Bi doping on sintering and dielectric characteristics of Ba_(6-3x)La_(8+2x)(Ti_(0.95)Zr_(0.05))_(18)O_(54)(x=2/3) ceramics[J]. The Chinese Journal of Nonferrous Metals, 2010, 20(3) |
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| Authors: | GAO Xu-fang QIU Tai |
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| Affiliation: | GAO Xu-fang,QIU Tai (College of Materials Science , Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | The sintering properties,microstructures and dielectric characteristics of Ba6-3x(La1-mBim)8+2x(Ti0.95Zr0.05)18O54 (x=2/3) microwave dielectric ceramics prepared by conventional solid-state route were studied.The results show that Bi3+ replaced La3+ into A1 rhombic sites and a single-phase solid solution with tungstenbronze-like structure formed in the range of 0
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| Keywords: | dielectric property Bi doping microwave dielectric ceramics tungstenbronze-like structure |
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