发明名称 POWDER FOR MAGNETIC MEMBER, POWDER COMPACT, AND MAGNETIC MEMBER
摘要 The present invention provides a powder for a magnetic member being excellent in moldability and difficult to oxidize, a powder compact produced from the powder, and a magnetic member suitable for a raw material of a magnetic member such as a rare earth magnet. A powder for a magnetic member includes magnetic particles 1 which constitute the powder for a magnetic member and each of which is composed of less than 40% by volume of a hydrogen compound 3 of a rare earth element, and the balance composed of an iron-containing material 2 which contains iron and an iron-boron alloy containing iron and boron. The hydrogen compound 3 of a rare earth element is dispersed in a phase of the iron-containing material 2. An antioxidant layer 4 having a low-oxygen permeability coefficient is provided on the surface of each of the magnetic particles 1. Since the phase of the iron-containing material 2 is uniformly present in each of the magnetic particles 1, the powder has excellent moldability and the density of a powder compact can be easily increased. By providing the antioxidant layer 4, oxidation of a newly formed surface formed on each of the magnetic particle 1 during molding is little oxidized, and a decrease in a magnetic phase ratio due to the presence of an oxide can be suppressed.
申请公布号 US2012286191(A1) 申请公布日期 2012.11.15
申请号 US201113511061 申请日期 2011.05.10
申请人 MAEDA TORU;WATANABE ASAKO;SUMITOMO ELECTRIC INDUSTRIES,LTD. 发明人 MAEDA TORU;WATANABE ASAKO
分类号 H01F1/06;H01F1/08 主分类号 H01F1/06
代理机构 代理人
主权项
地址