Ferrite core and its production method
    13.
    发明公开
    Ferrite core and its production method 有权
    铁氧体磁芯及其制造方法

    公开(公告)号:EP1286368A2

    公开(公告)日:2003-02-26

    申请号:EP02255742.5

    申请日:2002-08-16

    申请人: TDK Corporation

    IPC分类号: H01F17/04 H01F1/34 C04B35/26

    摘要: A ferrite core is provided. This ferrite core has high saturation flux density at a high temperature of 100°C or higher, and in particular, at around 150°C, and has excellent magnetic stability at a high temperature, experiencing reduced deterioration of magnetic properties, and in particular, reduced core loss at such high temperature (even by trading off some improvement in the level of the loss). The ferrite core of the invention contains 56 to 57 mol% of iron oxide calculated in terms of Fe 2 O 3 , 5 to 10 mol% of zinc oxide calculated in terms of ZnO, 3 to 6 mol% of nickel oxide calculated in terms of NiO, and the balance of manganese oxide (MnO) as its main components, and when the main components has a composition represented by the formula: (Zn 2+   a , Ni 2+   b , Mn 2+   c , Mn 3+   d , Fe 2+   e , Fe 3+   f ) O 4+δ (1) wherein a, b, c, d, e and f meet the relations: a + b + c + d + e + f = 3, and δ= a + b + c + (3/2)d + e +(3/2)f - 4 the value of δ in formula (1) is such that: 0 ≤ δ ≤ 0.001.

    摘要翻译: 提供铁氧体磁芯。 该铁氧体磁心在100℃以上的高温,特别是在150℃附近具有高饱和磁通密度,在高温下的磁稳定性优异,磁特性的劣化少,特别是, 减少在这种高温下的核心损失(即使通过损失水平的一些改进来交换)。 本发明的铁氧体磁心含有以Fe 2 O 3换算的氧化铁56〜57摩尔%,以ZnO换算计为5〜10摩尔%的氧化锌,以NiO换算计为3〜6摩尔%的氧化镍, (Zn2 + a,Ni2 + b,Mn2 + c,Mn3 + d,Fe2 + e,Fe3 + f)O4 +δ(1)表示的组成的氧化锰(MnO)的余量作为主成分, )其中a,b,c,d,e和f满足关系:a + b + c + d + e + f = 3和δ= a + b + c +(3/2)d + e +(3 / 2)f - 4公式(1)中δ的值为:0≤δ≤0.001。