| 热分解法制备α-Al_2O_3超细粉末 |
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| 引用本文： | 冯拉俊,曹凯博,雷阿利.热分解法制备α-Al_2O_3超细粉末[J].中国粉体技术,2006,12(4):8-10. |
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| 作者姓名： | 冯拉俊 曹凯博 雷阿利 |
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| 作者单位： | 西安理工大学材料科学与工程学院,陕西,西安,710048 |
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| 基金项目： | 西安理工大学校科研和教改项目 |
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| 摘 要： | 为了探索一种简单易行的制备超细α-Al_2O_3的方法,分别对硝酸铝和硝酸铝与氨水所制Al(OH)_3溶胶进行加热分解,其产物经SEM观察均为0．1～10μm的粉末团聚体,通过X射线衍射测定产物为纯α-Al_2O_3,由Sherrer公式计算知,制备的α=Al_2O_3平均晶粒度分别为45 nm和35nm。通过两种方法的对比可知,直接对硝酸铝进行热分解制备超细α-Al_2O_3,其成本低、产率高、工艺简单易控制。
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| 关 键 词： | 热分解法 硝酸铝 超细Al_2O_3粉末 |
| 文章编号： | 1008-5548（2006）04-0008-03 |
| 收稿时间： | 2005-11-07 |
| 修稿时间： | 2005-11-072006-01-09 |
Preparation of α-Al2O3 Ultrafine Powder by Pyrolytic Process |
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| FENG La-jun,CAO Kai-bo,LEI A-li.Preparation of α-Al2O3 Ultrafine Powder by Pyrolytic Process[J].China Powder Science and Technology,2006,12(4):8-10. |
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| Authors: | FENG La-jun CAO Kai-bo LEI A-li |
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| Abstract: | For exploring a simple process of preparation ofα-Al_2O_3 ul- trafine powder,aluminum nitrate and aluminum hydroxide sol reacted from aluminum nitrate and ammonia water were individually heated and analyzed,whose products were all aggregate with sizes of 0.1～10μm observed by SEM and allα-Al_2O_3 determined by XRD with average grain sizes of 45 nm and 35 nm calculated by Sherrer formu- la.Comparing the above two methods,it was known that some advan- tages,such as low cost,high productivity and simple and easy con- trolled process,were belonged to the preparation ofα-Al_2O_3 ultrafine powder by directly heating and decomposing aluminum nitrate. |
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| Keywords: | pyrolytic process aluminum nitrate ultraflne aluminium oxide powder |
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