| 复合氧化物纳米粉掺杂BaTiO3 基MLCC 超细瓷料 |
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| 引用本文： | 李波,张树人,周晓华,王升,唐斌. 复合氧化物纳米粉掺杂BaTiO3 基MLCC 超细瓷料[J]. 复合材料学报, 2005, 22(4): 91-95 |
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| 作者姓名： | 李波 张树人 周晓华 王升 唐斌 |
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| 作者单位： | 电子科技大学微电子与固体电子学院, 成都 610054 |
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| 摘 要： | 采用新颖的纳米掺杂工艺成功制备了BaTiO3 基MLCC 超细抗还原瓷料。TG-DTA、XRD、TEM 分析表明, 通过水基溶胶-凝胶法合成了高分散、高活性的纳米掺杂剂, 平均粒度约40.2 nm。根据传统工艺与纳米掺杂工艺的比较, 对纳米掺杂机理进行了研究。实验发现, 由于纳米粉体的特殊效应, 纳米掺杂工艺能更有效地提高掺杂原子的取代改性作用, 从而更显著地改善瓷料的微观结构和宏观介电性能。样品经测试符合EIAX7R/ X8R 标准, 其介电常数K25 ℃ > 2800 、介质损耗tanδ< 110 %、绝缘电阻率I R = 10.2 Ω ·cm、平均晶粒尺寸Gav≈0.3μm。
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| 关 键 词： | 钛酸钡 多层陶瓷电容器 水基溶胶-凝胶法 复合氧化物纳米粉 纳米掺杂工艺 |
| 文章编号： | 1000-3851（2005）04-0091-05 |
| 收稿时间： | 2004-09-07 |
| 修稿时间： | 2004-09-07 |
NANOCOMPOSITE DOPED BaTiO3-BASED ULTRAFINE DIELECTRICSFOR MULTILAYER CERAMIC CAPACITANCE |
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| LI Bo,ZHANG Shuren,Zhou Xiaohua,WANG Sheng,TANG Bin. NANOCOMPOSITE DOPED BaTiO3-BASED ULTRAFINE DIELECTRICSFOR MULTILAYER CERAMIC CAPACITANCE[J]. Acta Materiae Compositae Sinica, 2005, 22(4): 91-95 |
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| Authors: | LI Bo ZHANG Shuren Zhou Xiaohua WANG Sheng TANG Bin |
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| Affiliation: | School of Microelect ronics and Solid-State Elect ronics, University of Elect ronicScience and Technology of China, Chengdu 610054, China |
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| Abstract: | A novel nano-doping process was int roduced for the preparation of Ba TiO3-based ult rafine nonreducibledielect rics for multilayer ceramic capacitance (MLCC) . According to TG-DTA , XRD and TEM analysis , the nano-dopant prepared by the water-based sol-gel method was well dispersive and active. The nano-doping mechanism wasinvestigated based on comparing conventional process with nano-doping process. It indicated that due to the specialnano-effect , the modification effect of foreign atom was improved effectively and the microst ructure and macro dielect ric characteristics of so acquired ceramics were improved consequently. The result s show that high performancedielect rics are obtained , with permittivity more than 2800 , dielect ric loss lower than 110 % and average grain size about 0.3μm , which satisfies the requirement s of EIA X7R/ X8R specifications. |
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| Keywords: | BaTiO3 muhilayer ceramic capacitance water-based sol-gel method nanocornposite powder nanodoping process |
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