Sandwiched structure of hot-deformed Nd-Fe-B permanent magnets processed by Nd-Cu eutectic alloys diffusion
文献类型：期刊论文
| 作者 | Hou, Longquan; Ju, Jinyun; Tang, Xu; Chen, Renjie; Yin, Wenzong; Yan, Aru; Chen, Bin; Du, Yeyuan |
| 刊名 | JOURNAL OF RARE EARTHS
 |
| 出版日期 | 2021 |
| 卷号 | 39期号:8页码:993-997 |
| 关键词 | COERCIVITY ENHANCEMENT NDFEB MAGNETS IMPROVEMENT MICROSTRUCTURE ANISOTROPY POWDERS |
| 英文摘要 | A series of sandwiched structures with different near-surface mass fractions x (x 1/4 3 wt%, 4 wt%, 5 wt%) was employed to develop high-coercivity hot-deformed Nd-Fe-B magnets by the addition of 2 wt% Nd-Cu eutectic alloys via adjusting the middle thickness and near-surface thickness. The designed magnet with a pronounced composite structure shows a 23% increase in coercivity with a 6% loss of remanence by adjusting the sandwiched structure at 4 wt% Nd-Cu eutectic alloys in the near-surface regions. The results indicate that the near-surface Nd-Cu-rich shell structure can effectively suppress the magnetization reversal of overall magnets, enhancing the coercivity. With the help of loading stress, Nd-Cu liquid enriched at the near-surface regions of the sample is infiltrated into the Nd-Cu-lean middle region, resulting in a concentration gradient. Microstructure characterizations further demonstrate that the infiltrated Nd-Cu eutectic plays a critical role in inhibiting grain growth and intergranular magnetic interaction. The optimized microstructure features suppress the reversed magnetization process, which makes a positive contribution to coercivity. 0 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21599]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Ju, JY 2.Chen, RJ (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Hou, Longquan,Ju, Jinyun,Tang, Xu,et al. Sandwiched structure of hot-deformed Nd-Fe-B permanent magnets processed by Nd-Cu eutectic alloys diffusion[J]. JOURNAL OF RARE EARTHS,2021,39(8):993-997. |
| APA | Hou, Longquan.,Ju, Jinyun.,Tang, Xu.,Chen, Renjie.,Yin, Wenzong.,...&Du, Yeyuan.(2021).Sandwiched structure of hot-deformed Nd-Fe-B permanent magnets processed by Nd-Cu eutectic alloys diffusion.JOURNAL OF RARE EARTHS,39(8),993-997. |
| MLA | Hou, Longquan,et al."Sandwiched structure of hot-deformed Nd-Fe-B permanent magnets processed by Nd-Cu eutectic alloys diffusion".JOURNAL OF RARE EARTHS 39.8(2021):993-997. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。