| 注射成形粘结钕铁硼/铁氧体复合磁体的研究 |
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| 引用本文： | 段柏华,曲选辉,何新波,秦明礼.注射成形粘结钕铁硼/铁氧体复合磁体的研究[J].稀有金属,2005,29(5):721-724. |
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| 作者姓名： | 段柏华 曲选辉 何新波 秦明礼 |
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| 作者单位： | 北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 高等学校博士学科点专项科研基金（20040008015）和国家973计划（TG200067203）资助项目 |
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| 摘 要： | 对注射成形粘结Nd-Fe-B/铁氧体复合磁体进行了深入的研究。实验结果表明：随着铁氧体磁粉的加入，复合磁体的磁性能虽略有降低，但其力学性能及热稳定性均有大幅度改善，特别是在铁氧体含量为87%（质量分数时），复合磁体内禀矫顽力温度系数为零，不同磁粉间静磁场的存在，使得复合磁体在铁氧体含量低于70%（质量分数）时，其磁性能大于平均值，而大于70%（质量分数）时则小于平均值。
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| 关 键 词： | 注射成形 复合磁体 钕铁硼 铁氧体 |
| 文章编号： | 0258-7076（2005）05-0721-04 |
| 收稿时间： | 2005-07-30 |
| 修稿时间： | 2005-07-302005-08-13 |
Bonded Hybrid Magnets of Nd-Fe-B/Ferrite Prepared by Injection Molding |
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| Duan Bohua,Qu Xuanhui,He Xinbo,Qin Mingli.Bonded Hybrid Magnets of Nd-Fe-B/Ferrite Prepared by Injection Molding[J].Chinese Journal of Rare Metals,2005,29(5):721-724. |
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| Authors: | Duan Bohua Qu Xuanhui He Xinbo Qin Mingli |
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| Affiliation: | School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The bonded hybrid magnets of Nd-Fe-B/Ferrite prepared by injection molding were investigated.The result shows that the mechanical strength and the thermal stability of bonded hybrid magnet are improved markedly with addition of ferrite in Nd-Fe-B powder,whereas its magnetic performance is reduced slightly.And the temperature coefficient of coercivity with zero is obtained in hybrid magnet with 87%(mass fraction) ferrite and 13%(mass fraction) HDDR Nd-Fe-B.Due to the magnetic dipole field between the different powders,the magnetic performance of hybrid magnet with Fe_3O_4 of less 70%(mass fraction) is better than the average.However,when Fe_3O_4 fraction more than 70%,its magnetic properties are worse than average. |
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| Keywords: | injection molding hybrid magnets Nd-Fe-B ferrite |
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