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Preparation and Magnetic Properties of 2:17-Type SmCo Alloy by Transition Metal-Induced Calciothermic Reduction

  • Advances in Processing, Manufacturing, and Applications of Magnetic Materials
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Abstract

We present a one-step method for preparing Sm (CobalFe0.08Cu0.1Zr0.03)7.45 alloy through transition metal-induced SmF3 calciothermic reduction. The composition, crystal structure, element distribution, and chemical valence of the alloy were characterized by inductively coupled plasma, x-ray diffraction, scanning electron microscopy, x-ray energy dispersive spectroscopy, transmission electron microscopy, and x-ray photoelectron spectroscopy. The results show that the content of samarium in the alloy increases with the SmF3 amount. The composition of the alloy is similar to that of the designated alloy by adding 10 wt.% SmF3 over the theoretical addition. The reaction product is CaF2, and the ingot alloy is composed of 1:7 and 2:17 phases. The metal elements are uniformly distributed and demonstrate zero valency. The magnetic properties of the magnet show that the remanent magnetization, intrinsic coercivity, and maximum energy product are 1.15 T, 2145.30 kA/m, and 205.34 kJ/m3, respectively.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSFC) (No.51774155), Jiangxi Provincial Key Research and Development Program (20192BBE50028) and the Cultivation Project of the State key Laboratory of Green Development and High-value Utilization of Ionic Rare Earth Resources (20194AFD44003).

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Authors and Affiliations

  1. Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China

    Donghui Liu, Qiaofa Lan, Xiaolin Zhang, Fei Niu & Youming Yang

  2. Jiangxi Provincial Key Laboratory of Flash Green Development and Recycling, Jiangxi University of Science and Technology, Ganzhou, 341000, China

    Fei Niu & Youming Yang

  3. National Engineering Research Center for Ionic Rare Earth, Ganzhou, 341000, China

    Qiaofa Lan & Youming Yang

  4. Key Laboratory of Development and Application of Ionic Rare Earth Resources, Ministry of Education, Jiangxi University of Science and Technology), Ganzhou, 341000, China

    Fei Niu & Youming Yang

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  1. Donghui Liu
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  2. Qiaofa Lan
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  3. Xiaolin Zhang
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  4. Fei Niu
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Correspondence to Youming Yang.

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Liu, D., Lan, Q., Zhang, X. et al. Preparation and Magnetic Properties of 2:17-Type SmCo Alloy by Transition Metal-Induced Calciothermic Reduction. JOM 73, 3885–3893 (2021). https://doi.org/10.1007/s11837-021-04942-1

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