Patent ID: 6413327
Filing Date: 2002-07-02
Classification: H01F

Abstract:
A nitride, rare earth magnet material having a basic composition represented by:R&agr;T100-(&agr;+&bgr;+&ggr;+&dgr;)M&bgr;B&ggr;N&dgr; (atomic %), wherein R is at least one rare earth element including Y, where as a rare earth element Sm must be present, T is Fe alone or a combination of Fe and Co and/or Ni, M is at least one element selected from the group consisting of Al, Ti, V, Cr, Mn, Cu, Ga, Zr, Nb, Mo, Hf, Ta, W and Zn, 6&lE;&agr;&lE;15, 0.5&lE;&bgr;&lE;10, 0&lE;&ggr;&lE;4, and 4&lE;&dgr;&lE;30, said nitrided, rare earth magnet material being substantially composed of a hard magnetic phase of an R2T17 structure having an average crystal grain size of 0.01-1 &mgr;m, and an average area ratio of &agr;-Fe being 5% or less.