| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Effect of Dy Substitution at Nd Sites in Melt-spun Nd-Fe-B Permanent Magnet Ribbons: A magnetic system for Electric Vehicles. |
| Author(s) |
Shrantik Kumar Dey, Shampa Aich |
| On-Site Speaker (Planned) |
Shrantik Kumar Dey |
| Abstract Scope |
In this study the effect of adding Dysprosium as an alloying element to the Nd-Fe-B magnetic system was evaluated by preparing the samples via Rapid Solidification (melt-spinning) process. Micron-thin Ribbons of composition Nd2-xDyxFe14B (x=0 and 0.6) were synthesized, spinning at wheel speed of 30 m/s. Thereafter, the rapidly solidified ribbons were studied by X-Ray Diffraction technique and SQUID-VSM to understand the phase formation behavior and investigate the magnetic properties of the ribbons respectively. Dysprosium addition increased the maximum energy product [(BH)max] 2 fold, while the coercivity values were observed as 2.4 kOe and 8.1 kOe for Nd2Fe14B and Nd1.4Dy0.6Fe14B ribbons, respectively. Microstructural observation with the help of Field Emission Scanning Electron Microscope (FESEM) revealed that the increased coercivity by Dysprosium addition can be attributed to the segregation of Dysprosium at the interface between the matrix phase and the grain boundary phase which opposes the nucleation of reverse domain during demagnetization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Characterization, Solidification |