Journal of Materials Science, Vol.38, No.3, 445-449, 2003
Production of fine Nd-Fe-B alloy powder by pulsed plasma atomization
Extremely fine (<10 μm) Nd-Fe-B powder was generated by pulsed plasma atomization processing. The number average was just over 3 μm, as determined by computer-assisted scanning electron microscopy analysis of almost 3000 particles. Despite the fine particle size, alloys of stoichiometric Nd2Fe14B resulted in the properitectic formation of α-Fe, deleteriously affecting the magnetic properties. Nevertheless, this work shows the possibility of generating extremely fine, isotropic powder for bonded and hybrid magnet applications. (C) 2003 Kluwer Academic Publishers.