分享好友 知识库首页 频道列表

SINTERED MAGNET

2025-06-18 10:394920下载
文件类型:PDF文档
文件大小:2457K
The purpose of the present invention is to obtain a sintered magnet having a high coercivity and a large maximum energy product in spite of using a reduced amount of rare earth element. The sintered magnet of the present invention comprises ferrous alloy particles having a film containing a heavy rare earth element or yttrium fluoride and rare earth-iron-boron alloy particles; between the ferrous alloy particles and the rare earth-iron-boron alloy particles, there is a region wherein the heavy rare earth element or yttrium concentration is higher than in other portions; the ferrous alloy particles have a larger saturation magnetization than do the rare earth-iron-boron alloy particles; and the ratio of the average grain size of the ferrous alloy particles and the average grain size of the rare earth-iron-boron alloy particles is between 1 and 100.


请登录查看


反对 0
举报 0
收藏 0
打赏 0
评论 0