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Synthesis of Nd2Fe14B powders by spray-drying and reduction–diffusion processes

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Abstract

The magnetic Nd–Fe–B powders were prepared by a mechanochemical method, including the processes of spray drying, debinding, milling, H2 reduction, Ca reduction, and washing. The liquid solution dissolved with various metal salts was first spray-dried to prepare the precursor powders having uniformly dispersed Nd, Fe, and B components. The precursor powders in turn were subjected to the subsequent processes. The particle size of the resultant Nd–Fe–B powders was about 1 μm. Effects of the process parameters on phases, morphologies, microstructures, compositions, and thermal properties of the powders were investigated.

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Authors and Affiliations

  1. Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam, Korea

    X. L. Dong

  2. Laboratory of Ultrafine Particles, Shenyang Polytechnic University, 110023, Shenyang, People’s Republic of China

    X. L. Dong

  3. Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam, Korea

    B. K. Kim, C. J. Choi & K. S. Park

  4. International Centre for Materials Physics, Institute of Metal Research, Academia Sinica, 110015, Shenyang, People’s Republic of China

    Z. D. Zhang

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  1. X. L. Dong
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  2. B. K. Kim
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  3. C. J. Choi
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  4. K. S. Park
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  5. Z. D. Zhang
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Dong, X.L., Kim, B.K., Choi, C.J. et al. Synthesis of Nd2Fe14B powders by spray-drying and reduction–diffusion processes. Journal of Materials Research 16, 1083–1089 (2001). https://doi.org/10.1557/JMR.2001.0150

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  • DOI: https://doi.org/10.1557/JMR.2001.0150

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