Rare earth magnet and method for producing same

Details Rare earth magnet and method for producing same Rare earth magnet and method for producing same

2008-06-25

2010-02-02

Rickman, Holly (Department: 1794)

Stock material or miscellaneous articles

Composite

Of inorganic material

Reexamination Certificate

active

07655325

ABSTRACT:
A rare-earth magnet includes a magnet body made of an R—Fe—B based rare-earth magnet material (where R is at least one rare-earth element) and a metal film that has been deposited on the surface of the magnet body. The magnet further includes a plurality of reaction layers between the magnet body and the metal film. The reaction layers include: a first reaction layer, which contacts with at least some of R2Fe14B type crystals, included in the magnet body, to have received the rare-earth element that has been included in the R2Fe14B type crystals; and a second reaction layer, which is located between the first reaction layer and the metal film and which has a lower rare-earth element concentration than that of the first reaction layer.

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Official Communication issued in International Patent Application No. PCT/JP2006/325856, mailed on Apr. 17, 2007.
English translation of the official communication issued in counterpart International Application No. PCT/JP2006/325856, mailed on Jul. 10, 2008.
Official Communication issued in corresponding European Patent Application No. 08843240.0, mailed on Oct. 22, 2009.

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