| 简介 |
A method for manufacturing a rare-earth magnet having excellent workability and coercive-force performance in a high-temperature atmosphere and magnetization performance by controlling the content of Pr as the alloy composition to an optimum range, including : press-forming magnetic powder B to form a compact, the magnetic powder B including a RE-Fe-B main phase MP (RE : Nd and Pr) and an RE-X alloy (X : metal element) grain boundary phase BP around the main phase MP having an average grain size of 10 nm to 200 nm; and performing hot deformation processing to the compact to give magnetic anisotropy thereto, thus manufacturing the rare-earth magnet C that is a nano-crystalline magnet. The content of Nd, B, Co and Pr included in the magnetic powder B is Nd : 25 to 35, B : 0.5 to 1.5 and Co : 2 to 7 in terms of at %, and Pr : 0.2 to 5 at % and Fe. |
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