Abstract
The influence of melt rotation on the microstructure formation of Nd-Fe-B alloys, mainly the volume fraction and grain size of the α-Fe phase, is investigated using the electromagnetic levitation technique. Molten droplets were subjected to a strong rotation during levitation and compared to fixed samples without rotation. Additionally, experiments have been carried out where sealed samples were subjected to a well-defined forced rotation. A distinct reduction of the α-Fe volume fraction in samples with strong rotation was observed by measuring the magnetic moment. The melt flow in a levitated droplet is studied numerically under the additional effect of a global sample rotation which may give a strong suppression of internal motions.
| Original language | English |
|---|---|
| Pages (from-to) | E1857-E1858 |
| Number of pages | 2 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 272-276 |
| Issue number | SUPPL. 1 |
| Early online date | 14 Jan 2004 |
| DOIs | |
| Publication status | Published - May 2004 |
| Externally published | Yes |
Keywords
- Levitation
- Melt convection
- Nd-Fe-B magnets
- Solidification
ASJC Scopus subject areas
- Condensed Matter Physics
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