Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takao Yabumi0
Hayato Hashino0
Masahiro Hiraoka0
Shunji Suzuki0
Date of Patent
August 23, 2011
0Patent Application Number
124949020
Date Filed
June 30, 2009
0Patent Primary Examiner
Patent abstract
The present invention provides a rare earth magnet, which is formed through at least hot molding, the rare earth magnet containing grains including an R2X14B phase as a main phase, and a grain boundary phase surrounding peripheries of the grains, in which R is at least one element selected from the group consisting of Nd, Pr, Dy, Tb and Ho, and X is Fe or Fe with a part being substituted by Co; in which an element RH is more concentrated in the grain boundary phase than in the grains, in which the element RH is at least one element selected from the group consisting of Dy, Tb and Ho; and the element RH is present with a substantially constant concentration distribution from the surface part of the magnet to the central part of the magnet.
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