About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Advances in Soft Magnetic Nanocrystalline Alloys for Extreme Temperature Applications |
| Author(s) |
Paul R. Ohodnicki |
| On-Site Speaker (Planned) |
Paul R. Ohodnicki |
| Abstract Scope |
Nanocrystalline and amorphous soft magnetic alloys are utilized in a wide range of applications including sensors, current transformers, and magnetic components (inductors, transformers) for medium frequency power electronics. Traditional Fe-based nanocrystalline alloys are limited to temperatures below approximately 200C due to the Curie temperature of the amorphous phase being suppressed as compared to the crystalline resulting in exchange decoupling. Alternative Co-based alloy systems show great promise for higher temperatures due to amorphous phase Curie temperatures comparable to that of the crystalline phase resulting in maximum operational temperatures limited instead by one or more of the following: (1) microstructural stability, (2) stability of induced anisotropy, and (3) amorphous phase Curie temperature. Recent progress has demonstrated a new class of alloys, VulcanAlloy, with potential for extended operation at temperatures approaching 500C. Impacts of alloy optimization on overall stability will be presented as well as demonstrations of inductors in high temperature operational environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, High-Temperature Materials, Energy Conversion and Storage |