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RAPIDLY-QUENCHED ALLOY AND PREPARATION METHOD FOR RARE-EARTH MAGNET 发明申请

2023-05-03 2320 1511K 0

专利信息

申请日期 2025-07-10 申请号 WOCN15085555
公开(公告)号 WO2016015662A1 公开(公告)日 2016-02-04
公开国别 WO 申请人省市代码 全国
申请人 XIAMEN TUNGSTEN CO LTD
简介 Disclosed are a rapidly-quenched alloy and a preparation method for a rare-earth magnet, wherein the rapidly-quenched alloy contains an R2Fe14B main phase, where R is a rare-earth element including Nd, characterized in that a main phase crystal of the alloy has an average particle size in a short-axis direction of 10 to 15 micrometers, and an Nd-rich phase has an average spacing of 1.0 to 3.5 micrometers. Therefore, in a fine powder prepared by the alloy, the quantity of magnetic domains in a single crystal grain is reduced, which magnetic domains are easier to orientate along an external magnetic field to obtain a magnet of easy axis of magnetization; and moreover, squareness, coercivity and heat resistance of the magnet are obviously improved.


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