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| 溶胶-凝胶法制备堇青石纳米粉体及表征 | |
| 引用本文： | 曹颖,印万忠,王国胜,李伯深.溶胶-凝胶法制备堇青石纳米粉体及表征[J].中国粉体技术,2012,18(4):24-26. |
| 作者姓名： | 曹颖 印万忠 王国胜 李伯深 |
| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁沈阳 110004;沈阳化工大学化学工程学院,辽宁沈阳 110142 2. 东北大学资源与土木工程学院,辽宁沈阳,110004 3. 沈阳化工大学化学工程学院,辽宁沈阳,110142 4. 沈阳帕卡濑精有限总公司,辽宁沈阳,110042 |
| 基金项目： | 国家自然科学基金项目,编号:51074037 |
| 摘 要： | 以硝酸镁、硝酸铝和正硅酸乙酯为原料,按照堇青石化学计量配比,用溶胶-凝胶法配合回流制备堇青石粉体,通过差热分析、X射线衍射、扫描电镜等分析测试方法,对所制备粉体进行分析和表征.结果表明,在不添加任何助剂的情况下,可制得粒度均匀的堇青石粉体,平均粒径约为100 nm；压片后的坯样经1 056℃烧结,可获得以α-堇青石为主晶相的陶瓷材料,致密度为98.6％,且具有较低的介电常数和介电损耗(ε=3.94,tg δ=0.001 6,1 GHz),可用作高频片感介质材料. |
| 关 键 词： | 溶胶-凝胶法 堇青石 纳米粉体 |
Preparation of Cordierite Nano-particles by Sol-Gel Process and Characterization |
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| CAO Ying , YIN Wanzhong , WANG Guosheng , LI Boshen.Preparation of Cordierite Nano-particles by Sol-Gel Process and Characterization[J].China Powder Science and Technology,2012,18(4):24-26. | |
| Authors: | CAO Ying YIN Wanzhong WANG Guosheng LI Boshen |
| Affiliation: | 1.School of Resources and Civil Engineering,Northeastern University,Shenyang 110004;2.School of Chemical Engineering, Shenyang University of Chemical Technology,Shenyang 110142; 3.Shenyang Parkerizing Co.Ltd.,Shenyang 110142,China) |
| Abstract: | With a stoichiometric cordierite composition,using etraethytlorthosilicate,Mg(NO3)2·6H2O and Al(NO3)3·9H2O as raw materials,the cordierite nano-particles were prepared by sol-gel technique.The products were analyzed and characterized by DSC,XRD and SEM.The results show that the cordierite particles are prepared without additives after sintered at 700 ℃ for 2 h which have an average diameter of about 100 nm.Dense cordierite ceramics can be fabricated with the sample being sintered at 1 056 ℃ for 4 h.The sintered sample possesses excellent dielectric properties(ε=3.94,tg δ=0.001 6,1 GHz),which is an ideal dielectric material for high frequency multi-layer chip inductors and other electronic components. |
| Keywords: | sol-gel technique cordierite nano-powders |
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