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Rare earth magnet and production process thereof 发明授权

2023-09-28 3520 2931K 0

专利信息

申请日期 2025-06-25 申请号 US12494902
公开(公告)号 US8002906B2 公开(公告)日 2011-08-23
公开国别 US 申请人省市代码 全国
申请人 Shunji Suzuki; Hayato Hashino; Masahiro Hiraoka; Takao Yabumi
简介 The present invention provides a rare earth magnet, which is formed through at least hot molding, the rare earth magnet containing grains including an R2X14B phase as a main phase, and a grain boundary phase surrounding peripheries of the grains, in which R is at least one element selected from the group consisting of Nd, Pr, Dy, Tb and Ho, and X is Fe or Fe with a part being substituted by Co; in which an element RH is more concentrated in the grain boundary phase than in the grains, in which the element RH is at least one element selected from the group consisting of Dy, Tb and Ho; and the element RH is present with a substantially constant concentration distribution from the surface part of the magnet to the central part of the magnet.


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