Composite bonded magnets with controlled anisotropy directions prepared by viscous deformation technique

Composite bonded magnets with controlled anisotropy directions prepared by viscous deformation technique

When a radially anisotropic rare earth bonded magnet for a rotor with a high (BH) max value is magnetized multi-polarly, its flux distributes rectangularly and increases a cogging torque. In order to overcome this difficulty, we newly developed highly dense Sm 2Fe 17N 3 and Nd 2Fe 14B-based composit...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2007-09, Vol.316 (2), p.e101-e104
Hauptverfasser: Yamashita, Fumitoshi, Kawamura, Kiyomi, Okada, Yukihiro, Murakami, Hiroshi, Ogushi, Masaki, Nakano, Masaki, Fukunaga, Hirotoshi
Format: Artikel
Sprache:eng
Schlagworte:
Anisotopies direction
Magnet rotor
Multi-polar magnetization
Nd-Fe-B powder
Radial anisotropy
Sm-Fe-N powder
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Zusammenfassung:When a radially anisotropic rare earth bonded magnet for a rotor with a high (BH) max value is magnetized multi-polarly, its flux distributes rectangularly and increases a cogging torque. In order to overcome this difficulty, we newly developed highly dense Sm 2Fe 17N 3 and Nd 2Fe 14B-based composite bonded magnets with continuously controlled anisotropy directions by using a viscous deformation technique.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2007.02.045