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Magnet powder, a bonded magnet and motor 发明授权

2022-06-06 4140 164K 0

专利信息

申请日期 2025-02-22 申请号 JP2014083305
公开(公告)号 JP6278192B2 公开(公告)日 2018-02-14
公开国别 JP 申请人省市代码 全国
申请人 TDK株式会社
简介 A magnet powder having a composition composed of R (R consists of R1 and R2, R1 represents at least one rare earth element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Er, Tm, Yb and Lu, R2 represents at least one rare earth element selected from the group consisting of Ho and Gd). T (T represents at least one transition metal element containing Fe or the combination of Fe and Co as essential element(s)) and B, wherein, the atomic ratio of R2/(R1×R2) is 0.05 to 0.1, the ratio of R/T is 0.25 to 0.35, and the magnet powder has an average primary particle size of 45 to 100 nm. The present invention also provides a bond magnet using the magnet powder.


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