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| 1 | Regeneration of waste sintered Nd-Fe-B magnets to fabricate anisotropic bonded magnets显示文摘The waste sintered Nd-Fe-B magnets were regenerated as magnetic powders via manually crushing(MC) or hydrogen decrepitation(HD) to fabricate anisotropic bonded magnets. Effect of size distribution on the magnetic properties of the regenerated magnetic MC and HD powders was investigated. For the MC powders, as the particle size decreased, the remanence(Br) increased first, and then decreased again, while the coercivity(Hci) dropped monotonically. The powders with particle size in the range of 200–450 μm possessed the best magnetic properties of Br of 1.22 T and Hci of 875.6 k A/m. The corresponding bonded magnet exhibited magnetic properties of Br of 0.838 T, Hci of 940.9 k A/m, and(BH)max of 91.4 k J/m3, respectively. On the other hand, the HD powders with particle size range of 200-450 μm bore the best magnetic properties of Br of 1.24 T and Hci of 860.4 k A/m. Compared with magnetic properties of the waste magnet, the powders retained 93.9% of Br and 70.0% of Hci, respectively. The bonded magnet produced from HD powders possessed Br of 0.9 T, Hci of 841.4 k A/m, and(BH)max of 111.6 k J/m3, indicating its good potential in practical applications. | 李现涛 岳明 ZAKOTNIK Miha 刘卫强 张东涛 左铁镛 | 2015 | Journal of Rare Earths2015，33，7： | 6 |
| 2 | 高压成型(PrNd)_xAl_(0.7)Nb_(0.6)Cu_(0.1)B_(1.05)Fe_(97.55-x)合金的超精细结构分析显示文摘采用高压和常压方式制备出(PrNd)xAl0.7Nb0.6Cu0.1B1.05Fe97.55-x(质量百分比)合金,由扫描电子显微镜、振动样品磁强计、穆斯堡尔谱仪和电子自旋共振谱仪对比研究了两种压制方式对样品微观结构、磁性能和超精细结构的影响.结果发现:与常规压制方式制备的样品相比,采用1.8GPa成型得到的样品Hcj(内禀矫顽力)和(BH)max(最大磁能积)分别提高了133kAm-1和0.6kJm-3;而采用3.6GPa成型样品的Hcj和(BH)max分别提高了120.3kAm-1和3.2kJm-3.高压成型样品的R-rich相、富B相和α-Fe相较少,围绕铁原子的其他原子固有的对称性被改变,g因子增大.0.2,1.8和3.6GPa成型得到样品的内磁场Hin分别为2.206×104,2.205×104和2.194×104kA/m. | 唐杰 张林 杨梨容 魏成富 梅杨 陈擘威 | 2012 | 中国科学:物理学、力学、天文学2012，42，7： | 1 |
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