| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
An Atoms to Autos Approach for Materials Innovations for Lightweighting: An LMD Symposium in Honor of Anil K. Sachdev
|
| Presentation Title |
Magnetic Materials for EV Traction Motors |
| Author(s) |
Jun Cui, Jun Cui, Gaoyuan Ouyang, Iver Anderson, Matt Kramer |
| On-Site Speaker (Planned) |
Jun Cui |
| Abstract Scope |
To implement the high-speed high power density strategy for EV motor, the current 3.2%-Si steel must be replaced with a new material that is more efficient. Fe-6.5%Si is a good candidate, but it is difficult to fabricate using the traditional cold-roll process. Here, I will discuss the relationship among cooling rate, chemical ordering, mechanical, and magnetic properties of Fe-6.5%Si during the melt spinning process, which lays the foundation for making Fe-6.5%Si ribbon with tunable ductility. Although soft magnetic material alone can power a motor, a motor with permanent magnets (PM) is more efficient. Nd-Fe-B-based PM is dominant. Meeting EV’s demand on Nd-PM requires a 2x increase in Nd production by 2030. Moreover, Nd-PM without heavy rare earth elements (HREE) have poor coercivity above 150°C. In the second part of this talk, I will discuss the grain boundary engineering approach to produce the HREE-free Nd-PM for higher temperature application. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, |