| 简介 |
Disclosed are a rare earth magnet having sufficient corrosion resistance and a method for manufacturing such a rare earth magnet. A rare earth magnet of a preferred embodiment of the present invention comprises a magnet base body containing a rare earth element and a protective layer formed over the surface of the magnet base body. A protective layer of the preferred embodiment includes a first layer which covers the magnet base body and contains a rare earth element and a second layer which covers the first layer and contains substantially no rare earth element. Another protective layer of the preferred embodiment comprises an inner protective layer and an outer protective layer sequentially arranged from the magnet base body side. The outer protective layer is an oxide layer, a resin layer, a metal salt layer or a layer containing an organic-inorganic hybrid compound.
© KIPO & WIPO 2007 |
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