Title :
Hot-pressed and hot-deformed nanocomposite (Nd,Pr,Dy)2Fe14B/α-Fe-based magnets
Author :
Lee, D. ; Hilton, J.S. ; Liu, S. ; Zhang, Y. ; Hadjipanayis, G.C. ; Chen, C.H.
Author_Institution :
Univ. of Dayton Magnetics Lab., OH, USA
Abstract :
Fully dense isotropic and anisotropic (Nd,Pr,Dy)2Fe14B/α-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)2Fe14B/α-Fe-based magnets containing ∼4 vol% and ∼11 vol% α-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 ≈4 vol% α-Fe.
Keywords :
demagnetisation; dysprosium alloys; ferromagnetic materials; grain size; hot pressing; iron alloys; melt spinning; nanocomposites; neodymium alloys; permanent magnets; powder metallurgy; praseodymium alloys; remanence; (NdPrDy)2Fe14B-Fe; anisotropic nanocomposite magnets; fully dense isotropic nanocomposite magnets; hot press; hot-deformed nanocomposite (Nd,Pr,Dy)2Fe14B/α-Fe-based magnets; maximum energy products; melt-spun precursors; Anisotropic magnetoresistance; Iron; Magnetic anisotropy; Magnetic materials; Magnets; Nanostructured materials; Neodymium; Perpendicular magnetic anisotropy; Scanning electron microscopy; Soft magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.815755
