Permanent magnets
    2.
    发明公开
    Permanent magnets 失效
    Dauermagnete。

    公开(公告)号:EP0302395A1

    公开(公告)日:1989-02-08

    申请号:EP88112260.0

    申请日:1988-07-28

    申请人: TDK Corporation

    IPC分类号: H01F1/08

    摘要: A permanent magnet having high coercivity and energy product contains rare earth elements, boron, at least one element of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W, 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 is smaller than a specific value.

    摘要翻译: 具有高矫顽力和能量产物的永磁体包含稀土元素,硼,Ti,V,Cr,Zr,Nb,Mo,Hf,Ta和W中的至少一种元素,余量为Fe或Fe和Co,以及 由基本上为四方晶格结构的初级相,或这种初级相和无定形或结晶稀土元素不良辅助相的混合物,其中辅助相与主相的体积比小于特定值。

    Permanent magnet and method of producing same
    4.
    发明公开
    Permanent magnet and method of producing same 失效
    Dauermagnet和Verfahren zu seiner Herstellung。

    公开(公告)号:EP0242187A1

    公开(公告)日:1987-10-21

    申请号:EP87303284.1

    申请日:1987-04-14

    申请人: TDK Corporation

    IPC分类号: H01F1/04 H01F1/08

    摘要: In an R-Fe-B permanent magnet produced by a process including a rapid cooling, a composition of {R a (Ce b La 1-b ) 1-a } × (Fe 1-z Co z ) 100-x-y-w B y M w (R is at least one rare earth element except for La and Ce but including Y, 5.5 ≦ x

    摘要翻译: 在通过包括快速冷却的方法制备的R-Fe-B永磁体中,{Ra(CebLa1-b)1-a} x(Fe1-zCoz)100-xy-wByMw(R是至少一种稀有金属 但是除了La和Ce之外,包括Y,5.5