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Review the development, microstructure, and magnetic properties of cost-effective nanocrystalline rare earth-iron-boron permanent magnets manufactured without critical rare earths such as neodymium, praseodymium, terbium, and dysprosium.

December 21, 2023Journal of Materials Research and TechnologyOpen Access

Nanocrystalline alternative rare earth-iron-boron permanent magnets without Nd, Pr, Tb and Dy: A review

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Authors

JHJiayi HeYangzhou University BZBang ZhouUniversity Town of Shenzhen XLXuefeng LiaoHess (United States)

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Implication

Narrative review demonstrates the viability of abundant rare-earth elements in iron-boron permanent magnets, highlighting potential low-cost alternatives to critical neodymium and dysprosium.

Key Points

Review the development, microstructure, and magnetic properties of cost-effective nanocrystalline rare earth-iron-boron permanent magnets manufactured without critical rare earths such as neodymium, praseodymium, terbium, and dysprosium.
Synthesized global experimental research and intrinsic magnetic property data for Y-, La-, and Ce-based RE2Fe14B phases.
Evaluated the correlation between microstructure and hard magnetic performance across rapidly quenched and bulk nanocrystalline alloy compositions.
High-abundance rare earths such as yttrium, lanthanum, and cerium yield functional RE2Fe14B nanocrystalline magnets that bridge the magnetic performance gap between hard ferrites and bonded neodymium magnets.
Developing these critical-element-free alloy systems provides a significantly improved performance-to-cost ratio suitable for applications in voice coil motors, spindle motors, and magnetic resonance imaging systems.

Cite This Study

He et al. (2023) studied this question.

synapsesocial.com/papers/6aa2b3b3d081bdd435a73063 https://doi.org/10.1016/j.jmrt.2023.12.147

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Implication

Narrative review demonstrates the viability of abundant rare-earth elements in iron-boron permanent magnets, highlighting potential low-cost alternatives to critical neodymium and dysprosium.

Nanocrystalline alternative rare earth-iron-boron permanent magnets without Nd, Pr, Tb and Dy: A review

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Key Points

Cite This Study

Nanocrystalline alternative rare earth-iron-boron permanent magnets without Nd, Pr, Tb and Dy: A review

Discussion

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Implication

Key Points

Cite This Study

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