Effects of post-sinter annealing on microstructure and magnetic properties of Nd-Fe-B sintered magnets with Nd-Ga intergranular addition*
文献类型：期刊论文
| 作者 | Zhu, Jin-Hao; Jin, Lei; Jin, Zhe-Huan; Ding, Guang-Fei; Zheng, Bo; Guo, Shuai; Chen, Ren-Jie; Yan, A-Ru |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2021 |
| 卷号 | 30期号:6 |
| 关键词 | GRAIN-BOUNDARY PHASE PERMANENT-MAGNETS COERCIVITY WETTABILITY SIZE INTERFACE ALLOY AL CU |
| 英文摘要 | We investigate the effects of post-sinter annealing on the microstructure and magnetic properties in B-lean Nd-Fe-B sintered magnets with different quantities of Nd-Ga intergranular additions. The magnet with fewer Nd-Ga additions can enhance 0.2 T in coercivity, with its remanences nearly unchanged after annealing. With the further increase of the Nd-Ga addition, the annealing process leads coercivity to increase 0.4 T, accompanied by a slight decrease of remanence. With the Nd-Ga addition further increasing and after annealing, however, the increase of coercivity is basically constant and the change of remanence is reduced. Microstructure observation indicates that the matrix grains are covered by continuous thin grain boundary phase in the magnets with an appropriate Nd-Ga concentration after the annealing process. However, the exceeding Nd-Ga addition brings out notable segregation of grain boundary phase, and prior formation of part RE 6Fe13Ga phase in the sintered magnet. This prior formation results in a weaker change of remanence after the annealing process. Therefore, the diverse changes of magnetic properties with different Nd-Ga concentrations are based on the respective evolution of grain boundary after the annealing process. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21869]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Guo, S (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China. 2.Ding, GF 3.Guo, S (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. 4.Guo, S (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhu, Jin-Hao,Jin, Lei,Jin, Zhe-Huan,et al. Effects of post-sinter annealing on microstructure and magnetic properties of Nd-Fe-B sintered magnets with Nd-Ga intergranular addition*[J]. CHINESE PHYSICS B,2021,30(6). |
| APA | Zhu, Jin-Hao.,Jin, Lei.,Jin, Zhe-Huan.,Ding, Guang-Fei.,Zheng, Bo.,...&Yan, A-Ru.(2021).Effects of post-sinter annealing on microstructure and magnetic properties of Nd-Fe-B sintered magnets with Nd-Ga intergranular addition*.CHINESE PHYSICS B,30(6). |
| MLA | Zhu, Jin-Hao,et al."Effects of post-sinter annealing on microstructure and magnetic properties of Nd-Fe-B sintered magnets with Nd-Ga intergranular addition*".CHINESE PHYSICS B 30.6(2021). |
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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