| Effect of Gallium Addition on Magnetic Properties of Nd2Fe14B-Based/ α-Fe Nanocomposite Magnets |
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| 引用本文： | 张士岩,徐晖,倪建森,王海龙,白琴,董远达.Effect of Gallium Addition on Magnetic Properties of Nd2Fe14B-Based/ α-Fe Nanocomposite Magnets[J].中国稀土学报(英文版),2007,25(1):74-78. |
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| 作者姓名： | 张士岩 徐晖 倪建森 王海龙 白琴 董远达 |
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| 作者单位： | Institute of Materials, Shanghai University, Shanghai 200072, China |
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| 基金项目： | Project supported by the National Advanced Technology Research and Development Committee of China （2002AA302602-2） and the Scientific and Technological Committee of Shanghai （03QF14018） |
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| 摘 要： | The influence of Ga addition on the crystallization behavior and the magnetic properties of nanocomposite Nd2Fe14B-based/α-Fe magnets was investigated. It was found that the addition of 0.2% did not change the crystallization temperature of amorphous alloy, but the magnetic properties were improved significantly because of the strong exchange coupling interaction between the hard and soft magnetic phases. The optimum magnetic properties with iHc = 600. 3 kA· m^-1, B r = 0.75 T, and （BH）max = 88.03 kJ· m^-3 were obtained in bonded Nd9.5（FeCoZr）83.8 Ga0.3 B6.5 magnet with 15 m·s^- 1 wheel speed and 670 ℃ annealing treatment. The apparent improvement of magnetic properties originates from the grain refinement calculated using the Scherrer formula from corresponding XRD patterns and the excellent rectangularity of the demagnetization curve.
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| 关 键 词： | 纳米复合磁体 磁性 镓 结晶化 稀土材料 |
| 文章编号： | 1002-0721（2007）01-0074-05 |
| 收稿时间： | 20 January 2006 |
| 修稿时间： | 2006-01-202006-06-30 |
Effect of Gallium Addition on Magnetic Properties of Nd2Fe14B-Based/α-Fe Nanocomposite Magnets |
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| Zhang , Xu Hui, Ni Jiansen, Wang Hailong, Bai Qin,Dong Yuanda.Effect of Gallium Addition on Magnetic Properties of Nd2Fe14B-Based/α-Fe Nanocomposite Magnets[J].Journal of Rare Earths,2007,25(1):74-78. |
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| Authors: | Zhang Xu Hui Ni Jiansen Wang Hailong Bai Qin Dong Yuanda |
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| Affiliation: | Institute of Materials, Shanghai University, Shanghai 200072, China |
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| Abstract: | The influence of Ga addition on the crystallization behavior and the magnetic properties of nanocomposite Nd2Fe14B-based/α-Fe magnets was investigated. It was found that the addition of 0.2% did not change the crystallization temperature of amorphous alloy, but the magnetic properties were improved significantly because of the strong exchange coupling interaction between the hard and soft magnetic phases. The optimum magnetic properties with iHe = 600.3 kA·m−1 Br = 0.75 T, and (BH)max = 88.03 kJ·m−3 were obtained in bonded Nd9.5(FeCoZr)83.8Ga0.2B6.5 magnet with 15 m·s−1 wheel speed and 670 °C annealing treatment. The apparent improvement of magnetic properties originates from the grain refinement calculated using the Scherrer formula from corresponding XRD patterns and the excellent rectangularity of the demagnetization curve. |
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| Keywords: | magnetic properties nanocomposite magnets Ga addition crystallization behavior rare earths |
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