R-FE-B SINTERED MAGNET AND MAKING METHOD

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

METHOD

发明人：HIROTA, Koichi,NAGATA, Hiroaki,KUME,

Tetsuya,NAKAMURA, Hajime

申请号：EP16163102.3申请日：20160331公开号：EP30707A1公开日：20161005

专利附图：

摘要：The invention provides an R-Fe-B sintered magnet consisting essentially of 12-17 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 main phase, andhaving a core/shell structure that the main phase is covered with a grain boundaryphases. The sintered magnet has an average grain size of less than 6 µm, a crystalorientation of more than 98%, and a degree of magnetization of more than 96%, andexhibits 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：6-1, Ohtemachi 2-chome Chiyoda-ku Tokyo JP

国籍：JP

代理机构：Bailey, Sam Rogerson

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