| TiO_2对BLT微波介质陶瓷结构及介电性能的影响 |
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| 引用本文： | 王美娜,丘泰.TiO_2对BLT微波介质陶瓷结构及介电性能的影响[J].电子元件与材料,2008,27(9). |
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| 作者姓名： | 王美娜 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,江苏,南京,210009 |
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| 摘 要： | 采用传统固相烧结工艺制备了BaO-La2O3-nTiO2(n为3,4,5和6)微波介质陶瓷,研究了该系陶瓷的相组成、微观形貌和微波介电性能之间的关系。结果表明:该系陶瓷具有较优介电性能的主晶相为斜方晶系BaLa2Ti4O12,并且第二相的存在对其介电性能影响明显。烧结体致密性是Q·f及τf的重要影响因素。当n为4时,获得相对较优的介电性能:εr为139.7,Q·f为1239.0GHz和τf达180.0×10–6℃–1。
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| 关 键 词： | 无机非金属材料 微波介质陶瓷 BLT 主晶相 介电性能 |
Effects of TiO_2 content on structure and dielectric properties of BLT microwave dielectric ceramics |
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| WANG Mei-na,QIU Tai.Effects of TiO_2 content on structure and dielectric properties of BLT microwave dielectric ceramics[J].Electronic Components & Materials,2008,27(9). |
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| Authors: | WANG Mei-na QIU Tai |
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| Affiliation: | WANG Mei-na,QIU Tai (College of Materials Science , Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | BaO-La2O3-nTiO2 (n = 3, 4, 5 and 6) microwave dielectric ceramics were prepared by traditional solid state reaction method. The relation between crystal structure, micromorphology and microwave dielectric properties for the ceramics were investigated. The results show that the main crystal phase BaLa2Ti4O12 with better dielectric properties is orthorhombic system. And the existence of the second phase has a significant effect on its dielectric properties. The sintered density is an important factor to the v... |
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| Keywords: | BLT |
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