About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Magnetic Materials
|
Presentation Title |
Development of the Sintered (NdMM)-(FeCo)-B Based Magnets Substituted Nd by Less Critical Rare Earth (MM= La, Ce) |
Author(s) |
Wei Tang, Harshida Parmar, Jing Wang, Xubo Liu, Ikenna Nlebedim, Ryan Ott, Scott McCall, David Parker, Jun Cui |
On-Site Speaker (Planned) |
Wei Tang |
Abstract Scope |
Replacing critical elements (Nd and Pr) in the RE<sub>2</sub>Fe<sub>14</sub>B-type magnet with less critical elements (La or Ce) has been intensively studied in the past ten years. However, the magnetic properties of the sintered 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> phase. The magnetic properties of a magnet are predominantly governed by its intrinsic properties and microstructures. In this work, the effects of La and Mischmetal substitution for Nd, on the magnetic properties and microstructures of the sintered (NdMM)-(Fe,Co)-B 2-14-1 typed-magnet (MM=La or Mischmetal) are investigated. PrCu and PrAlCu, as sintering aids, are applied to enhance the coercivity of the magnets by grain boundary diffusion technique. The magnetic property evolution of the magnets with annealing processed are systematically studied as well. The Hc and (BH)max achieved are 10 kOe and 32.4 MGOe, respectively. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnetic Materials, Process Technology, Other |