| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Correlative Microscopic Analysis of Grain Boundary Engineered Nd-Fe-B Permanent Magnets |
| Author(s) |
Pradeep Konda Gokuldoss |
| On-Site Speaker (Planned) |
Pradeep Konda Gokuldoss |
| Abstract Scope |
Nd-Fe-B magnet has been one of the most sought-after permanent magnetic materials for major energy applications due to its exceptional combination of magnetic properties. In specific, the coercivity of the Nd-Fe-B magnet can be increased by optimizing the microstructure, including reducing the grain size and by tuning the grain boundary chemistry. Accordingly, alloying of Nb to the Nd-Fe-B magnets restricts the grain growth by the formation of nano-scale Nb clusters. Further, low melting eutectics can be utilized, to decorate the grain boundaries (GB) of the Nd-Fe-B magnets which enables in increasing the coercivity of the magnet.
To understand the process of GB diffusion on the Nd-Fe-B magnets, a custom designed correlative microscopy platform was utilized which facilitates combined transmission Kikuchi diffraction and Atom Probe Tomography. This correlative methodology applied to GB engineered commercial magnets, provided deeper insights into the role of microstructures on the final magnetic properties of the magnets. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Phase Transformations, Characterization |