抄録
HDDR conditions for obtaining the anisotropic Nd-Fe-B powders and their microstructures have been investigated. For both of the disproportionation and recombination stages, the alloys treated at the H2 pressures which are close to the equilibrium one, result in highly anisotropic powders. Anisotropic volume expansions of the disproportionated alloys were observed, which would be the key to the inducement of anisotropy.
