| Fe-SiO2磁性核壳复合粒制备与表征 |
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| 引用本文： | 吴文华,杨坤涛.Fe-SiO2磁性核壳复合粒制备与表征[J].安徽冶金科技职业学院学报,2005,15(4):10-12. |
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| 作者姓名： | 吴文华 杨坤涛 |
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| 作者单位： | 华中科技大学,湖北,武汉,430074;华中科技大学,湖北,武汉,430074 |
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| 摘 要： | 采用溶胶凝胶方法制备羰基铁/Si02核壳复合粒子.采用SEM、TEM、XRD、VSM、TG-DSC测试手段对材料形貌、微观结构与性能进行表征.实验结果表明羰基铁粉粒子表面均匀地包覆非晶态SiO2纳米壳层.包覆后的核壳复合粒子仍具有很好的超顺磁性能,适当控制壳层的厚度可以提高超顺磁性能.同时抗氧化性能也明显提高.
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| 关 键 词： | 核壳结构 磁性复合粒子 性能 二氧化硅 |
| 文章编号： | 1672-9994（2005）04-0010-03 |
| 收稿时间： | 2005-09-15 |
| 修稿时间： | 2005年9月15日 |
Preparation and Characterization of Fe- SiO2 Magnetic Core- shell Composite Particles |
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| WU Wen- hua,YANG Kun- tao.Preparation and Characterization of Fe- SiO2 Magnetic Core- shell Composite Particles[J].Journal of Anhui Vocational College of Metallurgy and Technology,2005,15(4):10-12. |
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| Authors: | WU Wen- hua YANG Kun- tao |
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| Affiliation: | WU Wen-hua YANG Kun-tao |
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| Abstract: | Carbonyl - iron composite particles were uniformity coated by the nano- SiO2 based on sol - gel method, the morphology, microstructure and properties of the composite particles were characterized by TEM .SEM. XRD.. DSC - TG, VSM. The results show that the prepared particles with core - shell structure have a shell within 40nm ;the coreshell particles remains super paramagnetic; Meanwhile, the resisting oxidation property is obviously improved. |
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| Keywords: | Core - shell magnetic composite particles Properties Silica |
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