Hot-pressed and hot-deformed nanocomposite (Nd,Pr,Dy)/sub 2/Fe/sub 14/B/α-Fe-based magnets

Abstract

Fully dense isotropic and anisotropic (Nd,Pr,Dy)/sub 2/Fe/sub 14/B//spl alpha/-Fe nanocomposite magnets have been successfully prepared by a hot press and hot deformation technique using melt-spun precursors. For the fully dense, hot-deformed, anisotropic nanocomposite (Nd,Pr,Dy)/sub 2/Fe/sub 14/B//spl alpha/-Fe-based magnets containing /spl sim/4 vol% and /spl sim/11 vol% /spl alpha/-Fe, the maximum energy products have reached 31 and 24 MGOe, respectively. At the time of proofreading for this paper, 42 MGOe has been reached for the nanocomposite magnets with /spl ap/4 vol% /spl alpha/-Fe.