The authors have successfully developed a low-cost anisotropic NdFeB magnet powder with high coercivity value of 18kOe without any Dy additives by diffusion processing of Nd-Cu-Al element to anisotropic magnet powder produced by the d-HDDR method. This enhancement mechanism is to isolate the magnetic couple between grain of Nd2Fe14B phase by creation of non-magnetic grain boundaries of Nd and Cu. By surface coating on this anisotropic magnet powder, the long-term aging loss behavior under air at 150deg.C has been improved by 6% after 1,000hr compared to current MAGFINE material without powder surface coating. By using this new anisotropic bonded magnet (New-MAGFINE), small automotive motors with excellent thermal stability and low cost characteristics have become possible.


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    Titel :

    Development of dy-free NdFeB anisotropic bonded magnet (New MAGFINE)


    Beteiligte:
    Noguchi, K. (Autor:in) / Mishima, C. (Autor:in) / Yamazaki, M. (Autor:in) / Matsuoka, H. (Autor:in) / Mitarai, H. (Autor:in) / Honkura, Y. (Autor:in)


    Erscheinungsdatum :

    01.09.2011


    Format / Umfang :

    1296169 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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