| 纳米Fe_3O_4磁性流体的制备与测试 |
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| 引用本文： | 李定国,熊永红,许巍,康颖,章腾. 纳米Fe_3O_4磁性流体的制备与测试[J]. 海军工程大学学报, 2009, 21(6) |
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| 作者姓名： | 李定国 熊永红 许巍 康颖 章腾 |
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| 作者单位： | 华中科技大学,物理学院,武汉,430074;海军工程大学,理学院,武汉,430033;华中科技大学,物理学院,武汉,430074;海军工程大学,理学院,武汉,430033 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用化学共沉淀法制备Fe_3O_4磁性纳米颗粒,用油酸作为分散剂制备出煤油基和二脂基磁性流体.用X射线荧光光谱仪(XRF)、X射线衍射(XRD)测试分析颗粒的组成、结构、平均粒径,表明所制备的颗粒为纯净Fe_3O_4纳米粒子,其平均粒径小于15 nm,分布均匀.用傅立叶变换红外光谱仪(FTIR)、热重法(TGA) 和导数热重量(DTG)分析法对磁性流体进行性能测试,结果表明磁性流体进行性能稳定,煤油基磁性流体工作温度应低于88.6 ℃,二脂基磁性流体的应低于236.0 ℃.
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| 关 键 词： | 磁性流体 化学共沉淀法 纳米Fe_3O_4 |
Preparation and properties of nano-scale Fe_3O_4 magnetic fluid |
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| LI Ding-guo,XIONG Yong-hong,XU Wei,KANG Ying,ZHANG Teng. Preparation and properties of nano-scale Fe_3O_4 magnetic fluid[J]. Journal of Naval University of Engineering, 2009, 21(6) |
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| Authors: | LI Ding-guo XIONG Yong-hong XU Wei KANG Ying ZHANG Teng |
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| Affiliation: | LI Ding-guo1,2,XIONG Yong-hong1,XU Wei2,KANG Ying2,ZHANG Teng2(1.Dept.of Physics,Huazhong Univ.of Science and Technology,Wuhan 430074,China,2.College of Science,Naval Univ.of Engineering,Wuhan 430033,China) |
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| Abstract: | The magnetic Fe_3O_4 colloid particulates were handled with the common chemical coprecipitation method. By cladding the colloid particulates with oleic acid mediate and dispersing evenly in air oil, diester-based magnetic fluid was prepared. The composition, structure and the mean particle sizes based on X-ray fluorescence (XRF) spectrometer, X-ray diffraction (XRD) analysis show that the prepared particles are pure Fe_3O_4 with an average particle size of 15 nm. By using the Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and derivative thermogravi-metric analysis (DTG), it is shown that the magnetic fluid performance is stable and that the air-oil based magnetic fluid temperature is below 88.6 ℃, and the diester-based magnetic fluid temperature lower than 236.0 ℃. |
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| Keywords: | magnetic fluid chemical co-precipitation method nano-scale Fe_3O_4 |
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