About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
REMAFS: An HF-Free Route to Rare Earth Metals for Permanent Magnet Application |
| Author(s) |
Anirudha Karati, Harshida Parmar, Trevor Riedemann, Matthew Besser, Teighlor O’Leary O’Leary, Andy Sherman, Joseph Goodwin, Denis Prodius, Ikenna Nlebedim |
| On-Site Speaker (Planned) |
Ikenna Nlebedim |
| Abstract Scope |
We will present our results on permanent magnets made via REMAFS (Rare Earth Metals via Alternative Fluoride Salts), a breakthrough metallurgical process designed to produce high-purity rare earth metals critical for electric vehicles, wind turbines, and defense systems. Unlike traditional methods that rely on hydrofluoric acid (HF), REMAFS uses room-temperature-synthesized NaREF4 salts that eliminate HF use and generation which dramatically improves safety and environmental performance. The process yields self-fluxing, low-melting slag that enhances energy efficiency, metal recovery, and downstream processing. Calciothermic demonstrations have resulted in over 500 gram of Nd metal per batch and over 50 grams of Dy metal with >99.8% purity. REMAFS metal was used to fabricate Nd-Fe-B magnets with >41 MGOe energy product. REMAFS is compatible with diverse feedstocks, including recycled materials, oxides, and chlorides which streamlines supply chain integration. This presentation will include the properties of the REMAFS-derived magnet, relative to a commercial metal. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Sustainability, Other |