| Preparation of ferromagnetic metal fine fibers by organic gel-thermal reduction process |
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| 作者姓名： | 曹凯 沈湘黔 景茂祥 周建新 |
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| 作者单位： | School of Materials Science and Engineering Jiangsu University，School of Materials Science and Engineering Jiangsu University，School of Materials Science and Engineering Jiangsu University，School of Materials Science and Engineering Jiangsu University，Zhenjiang 212013 China，Zhenjiang 212013 China，Zhenjiang 212013 China，Zhenjiang 212013 China |
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| 摘 要： | The organic gel-thermal reduction process was used for the preparation of ferromagnetic metal Ni, Co and Fe fine fibers from the raw materials of citric acid, lactic acid and metal salts. The structure, thermal decomposition process and morphologies of the gel precursors and fibers derived from thermal reduction of these gel precursors were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermo-gravimetric/differential scanning calorimetry and scanning electron microscopy. The results show that spinnability of gel largely depends on molecular structure of metal-carboxylate complex that is a linear-type structure formed in the gel. As a result, the gels exhibit a good spinnability. Metal Ni, Co and Fe fine fibers are featured with diameters of around 1 μm and a high aspect ratio up to 1×106.
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| 关 键 词： | 有机凝胶 磁铁材料纤维 可纺性能 制备方法 |
| 收稿时间： | 20 March 2007 |
| 修稿时间： | 2007-03-20 |
Preparation of ferromagnetic metal fine fibers by organic gel-thermal reduction process |
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| Cao Kai , Shen Xiang-qian , Jing Mao-xiang and Zhou Jian-xin.Preparation of ferromagnetic metal fine fibers by organic gel-thermal reduction process[J].Journal of Central South University of Technology,2007,14(5):607-611. |
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| Authors: | Cao Kai Shen Xiang-qian Jing Mao-xiang and Zhou Jian-xin |
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| Affiliation: | School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China |
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| Abstract: | The organic gel-thermal reduction process was used for the preparation of ferromagnetic metal Ni, Co and Fe fine fibers from
the raw materials of citric acid, lactic acid and metal salts. The structure, thermal decomposition process and morphologies
of the gel precursors and fibers derived from thermal reduction of these gel precursors were characterized by Fourier transform
infrared spectroscopy, X-ray diffraction, thermo-gravimetric/differential scanning calorimetry and scanning electron microscopy.
The results show that spinnability of gel largely depends on molecular structure of metal-carboxylate complex that is a linear-type
structure formed in the gel. As a result, the gels exhibit a good spinnability. Metal Ni, Co and Fe fine fibers are featured
with diameters of around 1 μm and a high aspect ratio up to 1 × 106.
Foundation item: Projects(50474038; 50674048) supported by the National Natural Science Foundation of China |
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| Keywords: | ferromagnetic metal fiber organic gel thermal reduction spinnability |
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