| 柠檬酸络合盐燃烧法合成DyFeO3纳米粉体 |
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| 引用本文： | 姜林文,刘维良,武安华.柠檬酸络合盐燃烧法合成DyFeO3纳米粉体[J].稀有金属材料与工程,2011(Z1):463-465. |
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| 作者姓名： | 姜林文 刘维良 武安华 |
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| 作者单位： | 景德镇陶瓷学院;中科院上海硅酸盐研究所 |
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| 基金项目： | 国家自然科学基金(50932003) |
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| 摘 要： | 利用溶胶凝胶自蔓延燃烧合成工艺制备得到了DyFeO3纳米粉体,并通过热综合分析(DTA/TG),X射线衍射(XRD)和扫描电子显微镜(SEM)分析探讨了溶液pH值对单相DyFeO3的形成和粉末晶粒尺寸的影响。结果表明,干凝胶能够在400℃以下燃烧基本完全,当pH值为3时,几乎没有杂相生成,将制得的DyFeO3纳米粉体置于750℃煅烧温度下并保温3h,微晶的尺寸在55～90nm范围内。
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| 关 键 词： | 溶胶凝胶法 纳米粉体 pH值 微晶尺寸 |
Synthesis of DyFeO3 Nanocrystalline Powders by Combustion Method of Citrate Chelate Salt |
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| Jiang Linwen,Liu Weiliang,Wu Anhua.Synthesis of DyFeO3 Nanocrystalline Powders by Combustion Method of Citrate Chelate Salt[J].Rare Metal Materials and Engineering,2011(Z1):463-465. |
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| Authors: | Jiang Linwen Liu Weiliang Wu Anhua |
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| Affiliation: | 1. Jingdezhen Ceramic Institute, Jingdezhen 333001, China) (2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China) |
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| Abstract: | DyFeO3 nanocrystalline powders were prepared by a sol-gel auto-combustion process. The influence of pH value of the precursor solution on the single phase of DyFeO3 forming and crystallite size of synthesized powders was investigated by thermal analyses (DTA/TG), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show the gel almost burns completely when the temperature is below 400 ℃; when pH value is 3, few other phase has been observed; the crystallite size in the powder calcined at 750 ℃ for 3 h ranges from 55 to 90 nm. |
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| Keywords: | sol-gel method nano-powder pH value crystallite size |
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