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The method for manufacturing the same and a nanocomposite bulk magnet 发明申请

2023-07-20 1610 755K 0

专利信息

申请日期 2025-07-12 申请号 JP2010524299
公开(公告)号 JPWO2010113482A1 公开(公告)日 2012-10-04
公开国别 JP 申请人省市代码 全国
申请人 Advanced Energy Industries Inc
简介 In a nanocomposite bulk magnet according to the present invention, nanocomposite magnet powder particles, including an Nd2Fe14B crystalline phase and an α-Fe phase, are combined together. The composition of the magnet is represented by T100-x-y-z-n(B1-qCq)xRyTizMn, where T is at least one transition metal element selected from the group consisting of Fe, Co and Ni and always including Fe, R is at least one rare-earth element including substantially no La or Ce, M is an additive metallic element, and x, y, z, n and q satisfy 4 at %≰x≰10 at %, 6 at %≰y≰10 at %, 0.05 at %≰z≰5 at %, 0 at %≰n≰10 at %, and 0≰q≰0.5, respectively. The powder particles have a minor-axis size of less than 40 μm. And powder particles, of which the major-axis size exceeds 53 μm, account for at least 90 mass % of the entire magnet. And those powder particles are directly combined with each other. Consequently, a full-dense magnet, of which the density is 96% or more of the true density of its material alloy, is realized.


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