张国清, 黄有林, 侯育花, 李志浩, 石志强. Ce掺杂对Nd-Fe-B快淬薄带结构及磁性能影响[J]. 南昌航空大学学报(自然科学版), 2017, 31(3): 67-72. DOI: 10.3969/j.issn.1001-4926.2017.03.011
引用本文: 张国清, 黄有林, 侯育花, 李志浩, 石志强. Ce掺杂对Nd-Fe-B快淬薄带结构及磁性能影响[J]. 南昌航空大学学报(自然科学版), 2017, 31(3): 67-72. DOI: 10.3969/j.issn.1001-4926.2017.03.011
ZHANG Guo-qing, HUANG You-lin, Hou Yu-hua, LI Zhi-hao, SHI Zhi-qiang. Effects of Ce-doping on the Structure and Magnetic Properties for Nd-Fe-B Melt-spinning Ribbons[J]. Journal of nanchang hangkong university(Natural science edition), 2017, 31(3): 67-72. DOI: 10.3969/j.issn.1001-4926.2017.03.011
Citation: ZHANG Guo-qing, HUANG You-lin, Hou Yu-hua, LI Zhi-hao, SHI Zhi-qiang. Effects of Ce-doping on the Structure and Magnetic Properties for Nd-Fe-B Melt-spinning Ribbons[J]. Journal of nanchang hangkong university(Natural science edition), 2017, 31(3): 67-72. DOI: 10.3969/j.issn.1001-4926.2017.03.011

Ce掺杂对Nd-Fe-B快淬薄带结构及磁性能影响

Effects of Ce-doping on the Structure and Magnetic Properties for Nd-Fe-B Melt-spinning Ribbons

  • 摘要: 通过熔体快淬技术制备了名义成分为(Nd1-xCex13.5Fe73.5Co6.7Ga0.5B5.6x=0.1~0.9)系列薄带,研究发现,不同甩带速率对薄带的磁性能及方形度影响显著,其中甩带速率30 m/s所制薄带的磁性能最佳。随着Ce含量的增加,薄带的矫顽力和剩磁整体呈下降趋势,但在x=0.3时,矫顽力可达1 295 kA/m,呈现反常增加现象,这与物质稀释定律相违背,这可能与Ce的混合价态及其相分离现象有关。这表明Ce在制备低成本高矫顽力稀土永磁中具有较大的应用潜力。

     

    Abstract: The melt-spinning ribbons with a nominal composition of (Nd1-xCex)13.5Fe73.5Co6.7Ga0.5B5.6(x=0.1~0.9) were prepared by melt-spinning technique. It was found that the wheel velocity had crucial effects on the magnetic properties and squareness of demagnetization curves. The optimum magnetic properties can be obtained, when the wheel velocity of 30 m/s was adopted. With increasing Ce content, the coercivity and remanence of the ribbons decrease. However, an abnormal increase of Hci was observed when x=0.3, a high coercivity of 1 295 kA/m was achieved. Mixed valence states of Ce and phase separation phenomenon should contribute to the abnormal increase of coercivity. It is indicated that Ce has a great potential value for preparing rare earth permanent magnets with low cost and high coercivity.

     

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