| 简介 |
A rare-earth magnetic powder for obtaining a bond magnet having exceptional environmental resistance is provided. This rare-earth magnetic powder is characterized in comprising : pulverulent particles obtained by aggregation of R2TM14B1 crystals that are tetragonal compounds of a rare-earth element (R), boron (B), and a transition metal (TM); the outer surface of the pulverulent particles being covered by a passive state film. The magnetic properties of a bond magnet manufactured using the pulverulent particles are not readily degraded by oxidation or moisture even in severe environments because the bond magnet comprises pulverulent particles covered by the passive state film. Specifically, a bond magnet having highly exceptional environmental resistance is obtained using this rare-earth magnetic powder. |
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