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Method of manufacturing sintered magnet 发明授权

2022-12-23 2590 106K 0

专利信息

申请日期 2025-07-01 申请号 JP2003387672
公开(公告)号 JP4179973B2 公开(公告)日 2008-11-12
公开国别 JP 申请人省市代码 全国
申请人 TDK Corporation3067
简介 The present invention provides a method for producing a sintered magnet, which can have a sufficient sintered density even when the magnet has a low-R composition. The method is for producing a sintered magnet comprising R (R : one or more rare-earth elements), T (T : one or more transition metal elements essentially comprising Fe, or Fe and Co) and B (boron) as the main components, wherein a starting alloy prepared by strip casting is pulverized to a given particle size to form a fine powder, where the starting alloy comprises discolored deposit 1 on the surface and the area ratio of the discolored deposit 1 is 1.5% or less, the resulting fine powder is compacted in a magnetic field to prepare a compact, and the compact is sintered.


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