Metastable phases in rare-earth permanent-magnet materials
Metastable phases in rare-earth permanent-magnet materials
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DOI：
10.1088/0022-3727/33/22/201
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发表时间：
2000-11
期刊：
影响因子：
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通讯作者：
Zhidong Zhang;Wei Liu;Jinfang Liu;D. Sellmyer
中科院分区：
文献类型：
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作者：
Zhidong Zhang;Wei Liu;Jinfang Liu;D. Sellmyer
综述了近年来稀土永磁体中亚稳相的研究进展。讨论了亚稳相和平衡相结构之间的关系以及由亚稳相向平衡相的转变。相的形成被发现依赖于亚稳相和平衡相的对称性之间的差异。比较了机械合金化法、机械球磨法、快淬法、氢化法、还原法、脱附复合法、固相反应法、固气反应法、自熔剂法和溅射法等不同工艺合成的亚稳相稀土永磁体的磁性能。本文的主要结论是，寻找新的高磁性能亚稳相将是稀土永磁材料研究的一个最活跃的方向。
A comprehensive review is given of recent advances in the study of metastable phases in rare-earth permanent magnets. The relations between the structures of the metastable and equilibrium phases and the transformations from the former to the latter are discussed. The formation of the phases is found to depend on the difference between the symmetries of the metastable and equilibrium phases. The magnetic properties of the metastable-phase rare-earth permanent magnets synthesized by various processes, such as mechanical alloying, mechanical milling, rapid quenching, hydrogenation, disproportionation, desorption and recombination, solid-state reaction, solid-gas reaction, self-flux and sputtering, are compared. The main conclusion of this article is that searching for new metastable phases with high magnetic performance will be one of the most active directions in the research on rare-earth permanent magnets.