公开(公告)号：US20150187476A1

公开(公告)日：2015-07-02

申请号：US14577665

申请日：2014-12-19

Applicant: TDK CORPORATION

Inventor： Takeshi TAKAHASHI ,  Tomoshi NAKAMOTO ,  Kenichi NISHIKAWA

IPC: H01F1/20 ,  C22C38/00 ,  C22C38/12 ,  H01F1/147

CPC classification number: C22C38/12 ,  B22F1/02 ,  C22C33/0264 ,  C22C38/00 ,  C22C45/00 ,  H01F1/33

Abstract: The present invention provides a soft magnetic powder core with a high electrical resistivity and a high strength. The soft magnetic powder core of the present invention is characterized in that in the soft magnetic powder core containing soft magnetic metal particles with Fe as the main component, the powder core has the structure in which oxide portions are present among soft magnetic metal particles, and the oxide portions are composed of oxides containing V, B and Fe. Further, the amount of B contained in the oxide portions of the powder core is 0.5 or more times and 5.0 or less times of the amount of V in terms of mass ratio.

Abstract translation: 本发明提供具有高电阻率和高强度的软磁粉末芯。 本发明的软磁性粉末芯的特征在于，在以Fe为主成分的软磁性金属粒子的软磁性粉末芯中，粉末芯具有软磁性金属粒子中存在氧化物部分的结构， 氧化物部分由含有V，B和Fe的氧化物构成。 此外，粉末芯的氧化物部分中所含的B的量为质量比为V的量的0.5倍以上且5.0以下。

公开(公告)号：US20140170496A1

公开(公告)日：2014-06-19

申请号：US14109533

申请日：2013-12-17

Applicant: TDK CORPORATION

Inventor： Hideaki SEKI ,  Atsushi SANO ,  Masaki SOBU ,  Tomoshi NAKAMOTO

IPC: H01M4/58

CPC classification number: H01M4/5825 ,  C01B25/45 ,  H01M10/052

Abstract: A positive electrode active material contains a compound represented by a chemical formula LiVOPO4. A crystal system of the compound is an orthorhombic system, and the amount of tetravalent V of the compound is 27.7 mass % or more and 28.2 mass % or less.

Abstract translation: 正极活性物质含有由化学式LiVOPO4表示的化合物。 化合物的晶体系是斜方晶系，化合物的四价V的量为27.7质量％以上至28.2质量％以下。