About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Magnetic Materials
|
Presentation Title |
Towards One-step Castable Cerium-based Gap Magnet |
Author(s) |
Andriy Palasyuk, Arne Swanson, Matthew Besser |
On-Site Speaker (Planned) |
Andriy Palasyuk |
Abstract Scope |
Cerium-based permanent magnets represent an alternative for supply dependent critical rare-earth (RE) magnets. They are domestic, versatile, process effective and less susceptible to supply disruptions. Our experiments show that these magnets easily achieve energy products (BH)max.of 15 – 20 MGOe because of their unique intra-granular coercivity mechanism that does not require typical powder metallurgy. The mechanism is regulated by the 2:7/5:19-type stacking faults and/or intercalated regions that appear in the matrix because of its reduced solubility at low temperatures. This opens potential for simple processing and/or advanced manufacturing. Our casting experiments show that (BH)max. beyond 15 MGOe, with Curie temperatures of >500 oC, remanent magnetizations >8.5 kG and coercivities >5 kOe, are achievable in one-step procedure that includes vacuum induction melting of kg-scale ingots with precisely controlled cooling process. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnetic Materials, Characterization, Sustainability |