Title :
Hot-pressed Nd2Co14B magnets
Author :
Fuerst, C.D. ; Brewer, E.G.
Author_Institution :
Gen. Motors Res. Lab., Warren, MI, USA
fDate :
9/1/1989 12:00:00 AM
Abstract :
The authors report consolidation of Nd2Co14B ribbons by hot pressing into nearly fully dense isotropic magnets. The remanence (Br=5.2 kG) and the energy product [(BH)max=5.4 MGOe] of the magnetically isotropic hot-pressed magnets were 2-3% less than values for annealed ribbons of the same composition. Five compositions were studied, and the best results were compared to those for a hot-pressed Nd-Fe-B magnet. A slight difference between the normalized demagnetization curves of Nd-Co-B and Nd-Fe-B hot-pressed magnets indicates a larger reversible demagnetization component in the former. There is no difference in the normalized recoil plots between Co-based and Fe-based alloys
Keywords :
boron alloys; cobalt alloys; demagnetisation; ferromagnetic properties of substances; hot pressing; neodymium alloys; permanent magnets; remanence; Nd-Fe-B; Nd2Co14B ribbons; demagnetization curves; dense isotropic magnets; energy product; hot pressing; normalized recoil plots; permanent magnets; remanence; Annealing; Coercive force; Demagnetization; Iron; Magnetic anisotropy; Magnetic properties; Magnets; Neodymium; Remanence; Saturation magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
