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- Title
晶界扩散磁体性能及热场环境下磁畴演变规律的研究.
- Authors
王春国; 丁 勇; 孙颖莉; 刘 雷; 沈鑫腾; 董创辉; 赵江涛; 王朝中; 闫阿儒
- Abstract
In this paper, Tb4O7 was used as the diffusion source for the grain boundary diffusion treatment on the N50 magnet. After diffusion, the Hcj of the magnet that diffuses parallel to the orientation plane increases by 8.83 to 22.74 kOe, and the Hcj of the magnet that diffuses perpendicular to the orientation plane increases by 8.87 to 22.77 kOe. By analyzing the Hcj of different positions of the magnet, the maximum Hcj is 26.77 kOe at a depth of 500-750 µm from the surface. The analysis of the Tb element, Nd element and O element of the magnet finds that there is a oxygen enrichment in the surface layer. Further analysis reveals that the oxygen content in the mag‐ net has an effect on the microstructure, performance and thermal stability of the magnet. In conclusion, control‐ ling the oxygen content of the magnet is the key to achieve a good performance magnet by grain boundary diffusion.
- Publication
Journal of the Chinese Society of Rare Earths, 2023, Vol 41, Issue 4, p736
- ISSN
1000-4343
- Publication type
Article
- DOI
10.11785/S1000-4343.20230409