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1. 发明公开

KR1020020033530A 바이어스용 자석을 구비한 자기 코어 및 이를 이용한인덕턴스 부품 失效
标题翻译：磁芯包括使用相同的偏置磁体和电感元件
公开(公告)号：KR1020020033530A
公开(公告)日：2002-05-07
申请号：KR1020010066026
申请日：2001-10-25
申请人： 가부시키가이샤 토킨
发明人： 후지와라,테루히꼬 , 이시이,마사요시 , 호시,하루끼 , 이소가이,게이따 , 이또,토루 , 암보,타미꼬
IPC分类号： H01F27/34
CPC分类号： H01F3/14 , H01F3/10 , H01F17/04 , H01F29/146 , H01F2003/103
摘要： PURPOSE: A low-profile magnetic core is provided to reduce the thickness of an inductor component by including at least one gap in a magnetic path and inserting a permanent magnet in the gap. CONSTITUTION: A magnetic core comprises at least one gap in a magnetic path and a permanent magnet inserted in the gap, a magnetic case having an alternating current magnetic permeability at 20 KHz of 45 or more in a magnetic field of 120 Oe under application of direct current and a core loss characteristic of 100 KW/m¬3 or less under the conditions of 20 KHz and a maximum magnetic flux density of 0.1 T. At this time, the magnetic core has initial permeability of 100 or more. And the magnetic core further includes Ni-Zn ferrite or Mn-Zn ferrite, wherein the magnet is a bonded magnet comprising a rare-earth magnet powder and a binder, the rare-earth magnet powder preferably having an average particle diameter of 0 mu m to 10 mu m (excluding 0 mu m) and the binder of 5 to 30 vol%, and also has a resistivity of 1 Ωcm or more and an intrinsic coercive force of 5 KOe or more.
摘要翻译：目的：提供一种薄型磁芯，以通过在磁路中包括至少一个间隙并将永磁体插入间隙中来减小电感器部件的厚度。构成：磁芯包括在磁路中插入的至少一个间隙和插入间隙中的永久磁铁，在120Ke的磁场中具有在20KHz的交流磁导率为45或更大的磁性壳体，电流和铁磁损耗特性在20KHz和最大磁通密度为0.1T的条件下为100KW / m -3以下。此时，磁芯的初始磁导率为100以上。磁芯还包括Ni-Zn铁氧体或Mn-Zn铁氧体，其中磁体是包含稀土磁体粉末和粘结剂的粘结磁体，稀土磁体粉末的平均粒径优选为0μm 至10μm（不含0μm），粘合剂为5〜30vol％，电阻率为1Ωcm以上，固有矫顽力为5KOe以上。

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