Coercivity enhancement of sintered Ce-substituted Nd-Fe-B magnets by grain boundary diffusion process of Tb
文献类型：期刊论文
| 作者 | Zhu, Qihang; Lin, Yicheng; Ma, Zhaokun; Li, Weidong; Song, Zhenlun; Zheng, Bizhang; Xu, Cheng; Yang, Lijing ; Li, Hong
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| 刊名 | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
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| 出版日期 | 2020 |
| 卷号 | 515 |
| 关键词 | RARE-EARTH-ELEMENTS DY |
| 英文摘要 | Grain boundary diffusion process (GBDP) of Tb on sintered Ce-substituted Nd-Fe-B magnets has been conducted by magnetron sputtering deposition of Tb film for coercivity enhancement. The microstructure and magnetic properties of the diffused (Nd,Ce)FeB magnets have been evaluated and the effect of diffusion temperature, time and Tb coating thickness on the Ce-substituted N35 magnets are discussed. The results show that a core-shell structure is formed around the main grains after GBDP, which promotes the coercivity enhancement of the magnets. A maximum coercivity enhancement from 10.9 kOe to 15.2 kOe is achieved in Ce-N35 magnets by deposition of 10 mu m Tb films followed by diffusion processing at 900 degrees C for 300 min. The inhibition effect of Ce in GBDP of Tb is also evaluated using (Nd,Ce)FeB magnets with different Ce contents and discussed using diffusion model simulation implemented by Tb distributions through GD-OES. The rare earth element (REE)-rich nodes located at the triple junction of the grains may attribute to the Tb aggregation and the formation of TbFe2, resulting in the inhibition of further Tb diffusion. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22433]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2020专题_期刊论文 2021专题_期刊论文 |
| 作者单位 | Song, ZL (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhu, Qihang,Lin, Yicheng,Ma, Zhaokun,et al. Coercivity enhancement of sintered Ce-substituted Nd-Fe-B magnets by grain boundary diffusion process of Tb[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2020,515. |
| APA | Zhu, Qihang.,Lin, Yicheng.,Ma, Zhaokun.,Li, Weidong.,Song, Zhenlun.,...&Li, Hong.(2020).Coercivity enhancement of sintered Ce-substituted Nd-Fe-B magnets by grain boundary diffusion process of Tb.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,515. |
| MLA | Zhu, Qihang,et al."Coercivity enhancement of sintered Ce-substituted Nd-Fe-B magnets by grain boundary diffusion process of Tb".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 515(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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