Rare earth sintered magnet and making method

A rare earth sintered magnet is an anisotropic sintered body comprising Nd 2 Fe 14 B crystal phase as primary phase and having the composition R 1 a T b M c Si d B e wherein R 1 is a rare earth element inclusive of Sc and Y, T is Fe and/or Co, M is A1, Cu, Zn, In, P, S, Ti, V, Cr, Mn, Ni, Ga, Ge, Zr...

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Bibliographic Details
Main Authors Nomura, Tadao, Gouki, Yuuji, Nagata, Hiroaki, Sakaki, Kazuaki, Hirota, Koichi, Nakamura, Hajime
Format Patent
LanguageEnglish
French
German
Published 29.11.2017
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:A rare earth sintered magnet is an anisotropic sintered body comprising Nd 2 Fe 14 B crystal phase as primary phase and having the composition R 1 a T b M c Si d B e wherein R 1 is a rare earth element inclusive of Sc and Y, T is Fe and/or Co, M is A1, Cu, Zn, In, P, S, Ti, V, Cr, Mn, Ni, Ga, Ge, Zr, Nb, Mo, Pd, Ag, Cd, Sn, Sb, Hf, Ta, or W, "a" to "e" are 12 ‰¤ a ‰¤ 17, 0 ‰¤ c s 10, 0.3 ‰¤ d s 7, 5 ‰¤ e s 10, and the balance of b, wherein Dy and/or Tb is diffused into the sintered body from its surface.
Bibliography:Application Number: EP20130163177