| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Studies of Sintered (NdMM)-(FeCo)-B Based Magnets Substituted Nd by Mischmetal (MM) |
| Author(s) |
Wei Tang, Harshida Parmar, Jing Wang, Harika Dasari, Ikenna Nlebedim, Jun Cui |
| On-Site Speaker (Planned) |
Wei Tang |
| Abstract Scope |
Replacing critical elements (Nd and Pr) in the RE2Fe14B-type magnet with less critical elements (La or Ce) has been intensively studied in the past years. However, the magnetic properties of the magnets containing La or Ce are still much lower than the theoretical values predicted from the intrinsic properties of the La/Ce<sub>2</sub>Fe<sub>14</sub>B phase. The magnetic properties of a magnet are predominantly governed by its intrinsic properties and microstructures. In this work, the effects of Mischmetal (MM) substitution for Nd on the magnetic properties and microstructures of the sintered (Nd<sub>1-x</sub>MM<sub>x</sub>)-(Fe, Co)-B magnets (x=0 to 1) are systematically investigated. Pr-Cu eutectic alloy, as a sintering aid, is also doped to enhance the coercivity. The H<sub>cj</sub> and (BH)<sub>max</sub> of magnets gradually decreases with increasing x from 0 to 0.5, and rapidly decreases after x>0.6. The relationship of magnetic properties to the MM concentration and microstructures of the magnets will be analyzed and discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Characterization, Process Technology |