| Influence of zirconium addition on the microstructure and magnetic properties of nanocomposite Nd10.1Fe78.2-xCo5ZrxB6.7 permanent magnets |
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| 作者姓名： | FENG Shanshan NI Jiansen WANG Zhanyong WU Yisheng ZHOU Bangxin XU Hui |
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| 作者单位： | Institute of Materials Science, Shanghai University, Shanghai 20007, China |
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| 基金项目： | 上海市重点学科建设项目;上海市科技发展基金 |
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| 摘 要： | Nanocomposite Nd10.1Fe78.2-xCo5ZrxB6.7 （x= 0, 1.5, 2.5, 2.7, 3, 4） permanent magnets were prepared by melt-spun and annealing. The microstructure and magnetic properties of the permanent magnets were investigated. The resuits reveal that the addition of Zr element significantly reduces the grain size and improves the thermal stability of the amorphous phase. A fme nanocomposite microstructure with an average grain size of about 35 nm can be developed at a wheel speed of 16 m·s^-1 with the content of Zr up to 2.7 at.%. After optimal annealing （710℃ x 4 min）, the magnetic properties of the Ndl0.1Fe75.5Co5Zr2.TB6.7 bonded magnets were achieved as follows： Br= 0.72 T, jHc = 769 kA·m^-1, and （BH）max = 85.0 kJ·m^-3.
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| 关 键 词： | Nd-Fe-B合金 磁性 纳米符合材料 微观结构 |
| 收稿时间： | 23 February 2006 |
| 修稿时间： | 2006-02-23 |
Influence of zirconium addition on the microstructure and magnetic properties of nanocomposite Nd10.1Fe78.2-xCo5ZrxB6.7 permanent magnets |
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| FENG Shanshan NI Jiansen WANG Zhanyong WU Yisheng ZHOU Bangxin XU Hui.Influence of zirconium addition on the microstructure and magnetic properties of nanocomposite Nd10.1Fe78.2-xCo5ZrxB6.7 permanent magnets[J].Rare Metals,2007,26(3):218-221. |
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| Authors: | FENG Shanshan NI Jiansen WANG Zhanyong WU Yisheng ZHOU Bangxin XU Hui |
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| Affiliation: | Institute of Materials Science, Shanghai University, Shanghai 20007, China |
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| Abstract: | Nanocomposite Nd10.1Fe78.2-xCo5ZrxB6.7 (x = 0, 1.5, 2.5, 2.7, 3, 4) permanent magnets were prepared by melt-spun and annealing. The microstructure and magnetic properties of the permanent magnets were investigated. The resuits reveal that the addition of Zr element significantly reduces the grain size and improves the thermal stability of the amorphous phase. A fine nanocomposite microstmcture with an average grain size of about 35 nm can be developed at a wheel speed of 16 m·s-1 with the content of Zr up to 2.7 at.%. After optimal annealing (710℃ x 4 min), the magnetic properties of the Nd10.1Fe75.5Co5Zr2.7B6.7 bonded magnets were achieved as follows: Br= 0.72 T, jHc= 769 kA·m-1, and (BH)max = 85.0 kJ·m-3. |
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| Keywords: | magnetic properties Nd-Fe-B nanocomposite rare earths bonded magnet |
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