| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnetics and the Critical Materials Challenge: An FMD Symposium Honoring Matthew J. Kramer
|
| Presentation Title |
Mechanically Strengthened Heterogeneous Sm-Co Sintered Magnets |
| Author(s) |
Baozhi Cui, Xubo Liu, Cajetan I. Nlebedim, Jun Cui |
| On-Site Speaker (Planned) |
Baozhi Cui |
| Abstract Scope |
Samarium-cobalt sintered magnets have excellent magnetic properties, thermal stability, and corrosion resistance. They have been used in a variety of defense and civilian applications, particularly for applications between about 200 and 550ºC, but the utilization of these materials is restricted by their brittleness. Improving their mechanical resilience would allow them to be more cost-effective, efficient, and robust for various function-related applications while reducing the pressure on critical material supply chains.
In this work, we have engineered a series of novel heterogeneous microstructures, such as laminated coarser grain (CG) / finer grain (FG) or core/shell CG/FG microstructures, to achieve unprecedented combinations of superior mechanical and magnetic properties without altering the magnet compositions or the heat treatment procedures and parameters. A 60% enhancement of flexural strength was obtained in the heterogeneous Sm2(CoFeCuZr)17 sintered magnets, with negligible impact on their excellent magnetic properties. The technology is compatible with existing magnet manufacturing processes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Process Technology, Mechanical Properties |