| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Microstructure Engineering of Sm-Fe based ThMn12-type Anisotropic Sintered Magnets |
| Author(s) |
Srinithi A K, Xin Tang, Hossein Sepehri-Amin, Jiasheng Zhang, Tadakatsu Ohkubo, Kazuhiro Hono |
| On-Site Speaker (Planned) |
Srinithi A K |
| Abstract Scope |
Recently, the development of rare-earth-lean SmFe12-based (ThMn12-type) permanent magnets (PM) has become a topic of interest in the PM community [1]. The SmFe12-based sintered magnets reported by Otsuka et al. and Zhang et al. had a coercivity of 0.8-1.0 T [2, 3]. For improvement of the coercivity, the microstructure needs to be tuned. In this work, by varying the processing methods and composition, the microstructural features such as grain size, and intergranular phase composition were designed such that a high coercivity of 1.4 T was obtained in the SmFe12-based (Sm8FebalTi8V8Al2Cu0.5) sintered magnets. The origin of the high coercivity is discussed based on detailed STEM-EDS analysis. Overall, this work shows the promise of the SmFe12-based magnets as future PM candidates.
[1] G. C. Hadjipanayis et al., Engineering 6 (2020) 141. [2] K. Otsuka et al., Mater. Trans. 62 (2021) 887. [3] J. Zhang et al., Acta Mater. 217 (2021) 117161. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Other, Other |