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    FERRITE SINTERED BODY AND FERRITE CORE AND COIL COMPONENT
    2.
    发明公开
    FERRITE SINTERED BODY AND FERRITE CORE AND COIL COMPONENT 审中-公开
    FERRITSINTERKÖRPER，FERRITKERN UND SPULENKOMPONENTE

    公开(公告)号：EP3029007A1

    公开(公告)日：2016-06-08

    申请号：EP13890719.1

    申请日：2013-08-02

    申请人： Kyocera Corporation

    发明人： OCHIAI, Hitomi ,  FURUTACHI, Kenichi ,  TAKENOSHITA, Hidehiro

    IPC分类号： C04B35/30 ,  H01F1/34 ,  H01F17/04

    CPC分类号： H01F27/255 ,  C01G53/006 ,  C01G53/40 ,  C01P2002/50 ,  C01P2006/40 ,  C01P2006/42 ,  C04B35/26 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3267 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3418 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/85 ,  H01F1/01 ,  H01F1/344 ,  H01F3/08 ,  H01F17/045 ,  H01F27/2823

    摘要： [Object] To provide a ferrite sintered body and a ferrite core each of which has a high permeability, and a coil component produced by winding a metal wire around the ferrite core.
    [Solution] A ferrite sintered body includes a crystal grain of a Ni-Zn ferrite and a grain boundary thereof, in which Ti is unevenly distributed in an outer region of the crystal grain, the outer region extending from an interface of the crystal grain to a length of 20% of a major axis of the crystal grain. The ferrite sintered body contains Fe, Zn, Ni, Cu, and Ti. When the total of components of Fe, Zn, Ni, and Cu in terms of oxides thereof is assumed to be 100% by mole, a composition of the ferrite sintered body is 48% by mole or more and 50% by mole or less of Fe in terms of Fe 2 O 3 , 29% by mole or more and 31% by mole or less of Zn in terms of ZnO, 14% by mole or more and 16% by mole or less of Ni in terms of NiO, and 5% by mole or more and 7% by mole or less of Cu in terms of CuO. The ferrite sintered body contains 0.05% by mass or more and 0.30% by mass or less of Ti in terms of TiO 2 relative to total 100% by mass of the components.

    摘要翻译： 本发明提供一种具有高磁导率的铁氧体烧结体和铁氧体磁芯，以及通过将金属线缠绕在铁氧体磁芯上而制成的线圈部件。 [解决方案]一种铁氧体烧结体，其包括Ni-Zn铁氧体的晶粒及其晶界，其中Ti在晶粒的外部区域不均匀地分布，外部区域从晶粒的界面延伸到 长度为晶粒长轴的20％。 铁氧体烧结体含有Fe，Zn，Ni，Cu和Ti。 Fe，Zn，Ni，Cu的氧化物成分的总计为100摩尔％时，铁素体烧结体的组成为48摩尔％以上且50摩尔％以下， 以Fe 2 O 3为Fe，换算为ZnO为29质量％以上且31质量％以下的Zn，以NiO换算为14质量％以上且16质量％以下的Ni，以及 以CuO计为5摩尔％以上且7摩尔％以下的Cu。 铁素体烧结体相对于总成分的100质量％，以TiO 2计含有0.05质量％以上且0.30质量％以下的Ti。