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Preparation of sintered (Ce1−xNdx)30FebalCu0.1B1 magnets by blending powder method

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Abstract

Magnets with nominal compositions of (Nd1−x Cex)30 Febal Cu0.1 B1 (x = 0, 0. 15, 0.3 and 0.4, mass%) have been fabricated by blending powder method. The remanence (Br), intrinsic coercivity (Hc) and maximum energy product (BH)max of the RE2F14B type magnets deteriorated when Nd was replaced by Ce. The chemical composition and crystal structure of magnet were investigated systemically. Backscattered electron (BSE) and energy dispersive spectroscopy (EDS) results revealed that Ce-rich and Ce-lcan matrix grains coexisted in the magnets. The magnetic coupling mechanism among the double hard magnetic phases was discussed. Low melting point RE-Cu phase was in favor of the formation of uniform continuous grain boundary. Transmission electron microscopy (TEM) investigation showed the presence of fcc (Nd,Ce)Ox phase in the grain boundary. When the Ce content was 15% of the total amounts of all the rare earth, the maximum energy product of the sintered magnet was 359. 8 kJ/m3.

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Authors and Affiliations

  1. Functional Materials Research Institute, Central Iron and Steel Research Institute, 100081, Beijing, China

    Shu-lin Huang (Doctor Candidate), Hai-bo Feng, Ming-gang Zhu, An-hua Li & Wei Li (Professor)

  2. School of Materials Science and Engineering, University of Science and Technology Beijing, 100083, Beijing, China

    Shu-lin Huang (Doctor Candidate) & Yue Zhang

  3. Beijing Engineering Laboratory of Advanced Metallic Magnetic Materials and Preparation Techniques, 100081, Beijing, China

    Shu-lin Huang (Doctor Candidate), Hai-bo Feng, Ming-gang Zhu, An-hua Li & Wei Li (Professor)

Authors
  1. Shu-lin Huang
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  2. Hai-bo Feng
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  3. Ming-gang Zhu
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  4. An-hua Li
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  5. Yue Zhang
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  6. Wei Li
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Correspondence to Wei Li.

Additional information

Foundation Item: Item Sponsored by National Natural Science Foundation of China (51171048); National High Technology Research and Development Program of China (2014CB643701) ; National Science and Technology Support Program of China (2012BAE02B01)

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Huang, Sl., Feng, Hb., Zhu, Mg. et al. Preparation of sintered (Ce1−xNdx)30FebalCu0.1B1 magnets by blending powder method. J. Iron Steel Res. Int. 22, 598–601 (2015). https://doi.org/10.1016/S1006-706X(15)30045-5

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  • DOI: https://doi.org/10.1016/S1006-706X(15)30045-5

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