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公开(公告)号:US5022939A
公开(公告)日:1991-06-11
申请号:US346457
申请日:1989-05-02
申请人: Koichi Yajima , Osamu Kohmoto , Tetsuhito Yoneyama
发明人: Koichi Yajima , Osamu Kohmoto , Tetsuhito Yoneyama
CPC分类号: B22F9/008 , H01F1/0571 , H01F1/0578
摘要: A permanent magnet material having high coercivity and energy product is provided which contains rare earth elements, boron, at least one element of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W, optional nickel, and a balance of Fe or Fe and Co, and consists of a primary phase of substantially tetragonal grain structure, or a mixture of such a primary phase and an amorphous or crystalline rare earth element-poor auxiliary phase wherein the volume ratio of auxiliary phase to primary phase has a specific relationship to other parameters.
摘要翻译: 提供了具有高矫顽力和能量积的永磁材料,其含有稀土元素,硼,Ti,V,Cr,Zr,Nb,Mo,Hf,Ta和W中的至少一种元素,任选的镍,余量为 Fe或Fe和Co,并且由基本上四边形晶粒结构的主相或这种初级相和无定形或结晶的稀土元素贫乏的辅助相的混合物组成,其中辅助相与主相的体积比具有 与其他参数具体关系。