Effect of the grain boundary Tb/Dy diffused microstructure on the magnetic properties of sintered Nd-Fe-B magnets
文献类型：期刊论文
| 作者 | Li, Weidong; Yang, Lijing ; Zhang, Qingke; Xu, Cheng; Zhu, Qihang; Song, Zhenlun; Zheng, Bizhang; Hu, Fangqin; Jiang, Jianjun
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| 刊名 | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
 |
| 出版日期 | 2020 |
| 卷号 | 502 |
| 关键词 | RARE-EARTH-ELEMENTS COERCIVITY ENHANCEMENT TBF3 DIFFUSION DY TEMPERATURE MECHANISM |
| DOI | 10.1016/j.jmmm.2020.166491 |
| 英文摘要 | The effect of heavy rare earth element (HREE, Tb and Dy) coating thickness on the grain boundary diffusion process (GBDP) of sintered Nd-Fe-B magnets is investigated. The distribution of HREE concentration fits well with the distribution depicted by the dual-trend diffusion model for the magnets with thin HREE coatings. However, when the HREE coating is thicker than a critical value, two new types of structures of HREE distribution, namely, the anti-shell/core structure and the transitional structure, besides the well-reported shell/core structure, appear sequentially around the Nd-Fe-B grains near the close surface of the diffused magnets. The evolution of the microstructures and the magnetic properties of the diffused magnets are further studied on the basis of the dual-trend diffusion model. The coercivity of the diffused magnets with thick HREE coatings slowly improves when anti-shell/core and transitional structures form on the outer layer of the diffused magnets. The ultimate coercivity of the HREE-diffused magnets is the result of the combined action of the above three structures. |
| 学科主题 | Materials Science ; Physics |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19622]  |
| 专题 | 2020专题 2020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 | Li, Weidong,Yang, Lijing,Zhang, Qingke,et al. Effect of the grain boundary Tb/Dy diffused microstructure on the magnetic properties of sintered Nd-Fe-B magnets[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2020,502. |
| APA | Li, Weidong.,Yang, Lijing.,Zhang, Qingke.,Xu, Cheng.,Zhu, Qihang.,...&Jiang, Jianjun.(2020).Effect of the grain boundary Tb/Dy diffused microstructure on the magnetic properties of sintered Nd-Fe-B magnets.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,502. |
| MLA | Li, Weidong,et al."Effect of the grain boundary Tb/Dy diffused microstructure on the magnetic properties of sintered Nd-Fe-B magnets".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 502(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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