Preparation of Rapidly Quenching (Nd,Pr)12(FeCoZr)82B6 Alloy and Magnetic Properties of Bonded Magnets
The optimum quenching rates and annealing conditions to prepare near stoichiometrical (Nd, Pr) 12(FeCoZr) 82B6 bonded magnets were investigated by using sub-overquenching and post annealing method. The quenching rates, annealing temperatures, and annealing time directly influence the microstructure...
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| Veröffentlicht in: | Journal of rare earths 2004-08, Vol.22 (4), p.497-500 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The optimum quenching rates and annealing conditions to prepare near stoichiometrical (Nd, Pr) 12(FeCoZr) 82B6 bonded magnets were investigated by using sub-overquenching and post annealing method. The quenching rates, annealing temperatures, and annealing time directly influence the microstructure and magnetic properties of alloy ribbons. The optimum magnetic properties of bonded magnets are achieved by melt spinning at 24 m s-1 wheel surface speed, annealing at 655 DeltaGC for 10 min, and bonding with 3.25% (mass fraction) epoxy. The best magnetic properties of remanence Br, intrinsic coercivity Hci and maximum energy product (BH ) max are 0.669 T, 811 kA m-1, and 75 kJ M-3, respectively. |
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| ISSN: | 1002-0721 |