TEM studies of sintered Fe-Nd-B magnets
TEM studies of sintered Fe-Nd-B magnets
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烧结 Fe-Nd-B 磁体的 TEM 研究
DOI：
10.1109/tmag.1986.1064431
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发表时间：
1986
影响因子：
2.1
通讯作者：
P. Schrey
中科院分区：
文献类型：
--
作者：
P. Schrey
在添加Al的烧结Fe-Nd-B磁体中，Fe 14 Nd 2 B中的Fe被Al取代，但Fe 4 Nd 1+&varepsilon B 4 中的Fe未被Al取代。在这些磁体中发现了含有质量浓度几乎相等的 Fe 和 Nd 且富含 Al 的附加相。通过TEM中的选择性氧化，发现Fe 14 Nd 2 B的薄边缘主要分解为bcc α-Fe和六方Nd 2 O 3 。 nm 厚度的薄边界层由 fcc 结构的富 Nd 材料组成，厚度 ≃ 0.52 nm。
In sintered Fe-Nd-B magnets with additions of Al, Fe is substituted by Al in Fe 14 Nd 2 B but not in Fe 4 Nd 1+&varepsilon B 4 . An additional phase containing Fe and Nd in nearly equal mass concentrations and enriched in Al was found in these magnets. Thin edges of Fe 14 Nd 2 B are found to decompose to mainly bcc α-Fe and hexagonal Nd 2 O 3 by selective oxidation in the TEM. Thin boundary layers of nm thickness are shown to consist of Nd-rich material of fcc structure with a ≃ 0.52 nm.