H. Kanekiyo et al., MICROSTRUCTURE AND MAGNETIC-PROPERTIES OF HIGH-REMANENCE ND5FE71.5CO5B18.5M (M = AL, SI, GA, AG, AU) RAPIDLY SOLIDIFIED AND CRYSTALLIZED ALLOYS FOR RESIN-BONDED MAGNETS, IEEE transactions on magnetics, 29(6), 1993, pp. 2863-2865
High-remanence, isotropic magnetic powder of a low rare earth content
been developed for resin-bonded magnet applications. The materials are
based on metastable Fe(Fe,Co)3B-Nd2Fe14B nanocrystalline mixture with
addition of a small amount of one of Al, Si, Cu, Ga, Ag, and Au. Effe
cts of the additives on the microstructure is investigated by means of
transmission electron microscopy It is found that the additives consi
derably reduce grain sizes, which results in improvements in the hyste
resis squareness or the material. Magnetic properties of a bonded magn
et produced from Nd4.5Fe73Co3Ga1B18.5 are described in detail.