| Effect of optimized aging processing on properties of the sintered Dy-doped Nd–Fe–B permanent magnet |
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| 引用本文： | 王晓丽,赵利娜,丁开鸿,崔胜利,孙永聪,李木森.Effect of optimized aging processing on properties of the sintered Dy-doped Nd–Fe–B permanent magnet[J].中国物理 B,2015(3):362-365. |
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| 作者姓名： | 王晓丽 赵利娜 丁开鸿 崔胜利 孙永聪 李木森 |
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| 作者单位： | Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education,Shandong University;Jiangsu University of Science and Technology Institute of Materials;Yantai Shougang Magnetic Materials Inc. |
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| 基金项目： | supported by the Chinese National Major Special Project for the Rare Earth and Rare Metallic Materials(Grant No.(2012)1743) |
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| 摘 要： | We investigate the effect of the optimized aging processing on magnetism and mechanical property of the sintered Dydoped Nd–Fe–B permanent magnet. The experimental results show that the magnetism, especially intrinsic coercivity, of the optimized aged Dy-doped Nd–Fe–B magnet is more excellent than that of the sintered one, but the former's strength and hardness are lower than that of the latter. It was observed that the optimized aged Dy-doped Nd–Fe–B magnet have more uniform grain size, thinner(Nd, Dy)-rich boundary phase. By means of the EBSD technology, the number of larger angle grain boundaries in the optimized aged Dy-doped Nd–Fe–B magnet is more than that of the sintered one. The reasons for the increased intrinsic coercivity and decreased mechanical properties of the optimized aged Dy-doped Nd–Fe–B magnet are also discussed.
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| 关 键 词： | Dy-doped Nd–Fe–B magnet magnetism strength morphology |
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