R-FE-B SINTERED MAGNET AND MAKING METHOD

专利名称：R-FE-B SINTERED MAGNET AND MAKING

METHOD

发明人：Koichi Hirota,Hiroaki Nagata,Tetsuya

Kume,Hajime Nakamura

申请号：US15087108申请日：20160331

公开号：US20160293303A1公开日：20161006

专利附图：

摘要：The invention provides an R—Fe—B sintered magnet consisting essentially of12-17 at % of Nd, Pr and R, 0.1-3 at % of M, 0.05-0.5 at % of M, 4.8+2*m to 5.9+2*m at %

of B, and the balance of Fe, containing R(Fe,(Co))B intermetallic compound as a mainphase, and having a core/shell structure that the main phase is covered with a grainboundary phases. The sintered magnet has an average grain size of less than 6 μm, acrystal orientation of more than 98%, and a degree of magnetization of more than 96%,and exhibits a coercivity of at least 10 kOe despite a low or nil content of Dy, Tb, and Ho.

申请人：Shin-Etsu Chemical Co., Ltd.

地址：Tokyo JP

国籍：JP

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