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R-T-B BASED ALLOY, METHOD FOR PRODUCING R-T-B BASED ALLOY SHEET, FINE POWDER FOR R-T-B BASED RARE 发明申请

2023-09-19 2960 395K 0

专利信息

申请日期 2025-07-12 申请号 JP2005316551
公开(公告)号 JP2007119882A 公开(公告)日 2007-05-17
公开国别 JP 申请人省市代码 全国
申请人 SHOWA DENKO KK
简介 PROBLEM TO BE SOLVED : To provide an R-T-B based alloy as the raw material for a rare earth permanent magnet having excellent magnetic properties. SOLUTION : The R-T-B based (wherein, R is at least one kind selected from rare earth elements including Y; T is a transition metal(s) essentially consisting of Fe; and B is boron) alloy is a raw material used for a rare earth based permanent magnet, and in which the volume ratio of a region including an R2T17 phase with the average grain size of ≤3 μm in the minor axis direction is 0.5 to 10%. COPYRIGHT : (C)2007, JPO&INPIT


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