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Abstract
In Nd-Fe-B melt-spun ribbon, Ga addition is found to be effective for the orientation of c axis of 2-14-1 grains normal to the ribbon plane even at high wheel surface velocity. A Nd12Fe80B6Nb1Ga1 melt-spun ribbon quenched with optimum wheel surface velocity was found to have textured structure on the free-side surface. Furthermore, this melt-spun ribbon was composed of fine grains of about 30 nm in size which is believed to be enough to provoke intergrain exchange interaction. The remanence and energy product of the field aligned powder of this melt-spun ribbon was about 7% and 20% higher than those of the not-aligned powder, respectively.
Published Version
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