公开(公告)号：US20120162858A1

公开(公告)日：2012-06-28

申请号：US13300952

申请日：2011-11-21

申请人： Hirobumi TANAKA ,  Makoto ENDO ,  Satoko UEDA ,  Daisuke UEDA ,  Shogo MUROSAWA ,  Daisuke YOSHIDA ,  Kenta ONO ,  Minoru OGASAWARA ,  Tatsuya KIKUCHI

发明人： Hirobumi TANAKA ,  Makoto ENDO ,  Satoko UEDA ,  Daisuke UEDA ,  Shogo MUROSAWA ,  Daisuke YOSHIDA ,  Kenta ONO ,  Minoru OGASAWARA ,  Tatsuya KIKUCHI

IPC分类号： H01G4/12

CPC分类号： H01G4/1227 ,  H01G4/1281 ,  H01G4/30

摘要： A multilayer ceramic electronic component comprising an element body in which a dielectric layer and an internal electrode layer are stacked. The dielectric layer is constituted from a dielectric ceramic composition including; a compound having a perovskite structure expressed by a formula of ABO3 (A is at least one selected from Ba, Ca, and Sr; B is at least one selected from Ti, Zr, and Hf); an oxide of Mg; an oxide of rare earth elements including Sc and Y; and an oxide including Si. The dielectric ceramic composition comprises a plurality of dielectric particles and a grain boundary present in between the dielectric particles. In the grain boundary, when content ratios of Mg and Si are set to D(Mg) and D(Si) respectively, D(Mg) is 0.2 to 1.8 wt % in terms of MgO, and D(Si) is 0.4 to 8.0 wt % in terms of SiO2.

摘要翻译： 一种多层陶瓷电子部件，其特征在于，具有层叠有电介质层和内部电极层的元件体。 电介质层由介电陶瓷组合物构成，包括： 具有由式ABO 3表示的钙钛矿结构的化合物（A是选自Ba，Ca和Sr中的至少一种; B是选自Ti，Zr和Hf中的至少一种）; Mg的氧化物; 包括Sc和Y的稀土元素的氧化物; 和包含Si的氧化物。 电介质陶瓷组合物包含存在于电介质颗粒之间的多个电介质颗粒和晶界。 在晶界中，当Mg和Si的含量比分别设定为D（Mg）和D（Si）时，D（Mg）以MgO计为0.2〜1.8重量％，D（Si）为0.4〜8.0 重量％。

公开(公告)号：US20110227679A1

公开(公告)日：2011-09-22

申请号：US13046307

申请日：2011-03-11

申请人： Masahito KOEDA ,  Tomofumi KURODA ,  Tomokazu ISHIKURA ,  Akihiro HARADA ,  Hiroyuki ONO ,  Osamu KIDO ,  Satoko UEDA

发明人： Masahito KOEDA ,  Tomofumi KURODA ,  Tomokazu ISHIKURA ,  Akihiro HARADA ,  Hiroyuki ONO ,  Osamu KIDO ,  Satoko UEDA

IPC分类号： H01F3/08 ,  B22F1/00

CPC分类号： H01F3/08 ,  B22F1/0003 ,  B22F2301/35 ,  B22F2303/01 ,  B22F2304/10 ,  H01F1/26 ,  H01F41/0246

摘要： The present invention provides a powder magnetic core low in the loss and high in the saturation magnetic flux density and a method for manufacturing the same. More specifically, the present invention provides a powder magnetic core that comprises a soft magnetic metal powder having an average particle size (D50) of 0.5 to 5 μm, a half width of diffraction peak in a direction of α-Fe as measured by X-ray powder diffraction of 0.2 to 5.0°, and an Fe content of 97.0% by mass or more, the core having an oxygen content of 2.0% by mass or more.

摘要翻译： 本发明提供一种低损耗，高饱和磁通密度的粉末磁芯及其制造方法。 更具体地，本发明提供一种粉末磁芯，其包含平均粒径（D50）为0.5〜5μm的软磁性金属粉末，测定的α-Fe的<110℃方向的衍射峰的半值宽度 核的氧含量为2.0质量％以上，X射线粉末衍射为0.2〜5.0°，Fe含量为97.0质量％以上。