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Fe_70-xNd₇B₂₁Zr₂Nb_x (x = 0-3.0) Permanent Magnets Produced by Crystallizing Amorphous Precursors.

ABSTRACT: The phase evolution, magnetic properties and microstructure of rod-shaped permanent magnets prepared by annealing the amorphous precursor Fe_70-xNd₇B₂₁Zr₂Nb_x (x = 0-3.0) were systematically studied. X-ray diffraction analysis, magnetometer, microstructure and δM-plots studies show that the good magnetic properties of the magnet are attributed to the uniform microstructure composed of exchange-coupled α-Fe and Nd₂Fe₁₄B phases. Nb addition to Fe_67.5Nd₇B₂₁Zr₂Nb_2.5 alloy led to an increase in the volume fraction of the soft magnetic phase, reinforced exchange coupling and improved magnetic properties. The magnetic properties of the optimized annealed Fe_67.5Nd₇B₂₁Zr₂Nb_2.5 rod are: coercivity (H_ci) = 513.92 kA/m, remanence (B_r) = 0.58 T, squareness (H_k/H_ci) = 0.24 and magnetic energy product ((BH)_max) = 37.59 kJ/m³.

SUBMITTER: Gu Y

PROVIDER: S-EPMC10972246 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Fe70-xNd7B21Zr2Nbx (x = 0-3.0) Permanent Magnets Produced by Crystallizing Amorphous Precursors.

Gu Yong Y Wang Zili Z Xu Hui H Li Zhong Z

Materials (Basel, Switzerland) 20240320 6

The phase evolution, magnetic properties and microstructure of rod-shaped permanent magnets prepared by annealing the amorphous precursor Fe70-xNd7B21Zr2Nbx (x = 0-3.0) were systematically studied. X-ray diffraction analysis, magnetometer, microstructure and δM-plots studies show that the good magnetic properties of the magnet are attributed to the uniform microstructure composed of exchange-coupled α-Fe and Nd2</su ...[more]

PMID: 38541583

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