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    Ferrite magnetic material
    3.
    发明授权
    Ferrite magnetic material 有权
    铁氧体磁性材料

    公开(公告)号：US07919007B2

    公开(公告)日：2011-04-05

    申请号：US11611180

    申请日：2006-12-15

    申请人： Yoshihiko Minachi ,  Noboru Ito ,  Yuuki Aburakawa ,  Yoshinori Fujikawa ,  Satoko Ueda

    发明人： Yoshihiko Minachi ,  Noboru Ito ,  Yuuki Aburakawa ,  Yoshinori Fujikawa ,  Satoko Ueda

    IPC分类号： C04B35/40 ,  C04B35/26 ,  H01F1/00

    CPC分类号： C04B35/2633 ,  C04B35/2641 ,  C04B35/6262 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3227 ,  C04B2235/3277 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/605 ,  C04B2235/656 ,  C04B2235/6562

    摘要： The present invention provides a ferrite magnetic material capable of attaining such magnetic properties that Br+(⅓)HcJ is 6200 or more even by sintering at a temperature of 1150° C. or lower. The ferrite magnetic material includes as a main phase thereof a ferrite phase having a hexagonal structure, the main phase being represented by the following composition formula (1): LaxCamα1−x−m(Fe12−yCoy)z with α representing one or two of Ba and Sr; wherein the constituent ratios of the metal elements constituting the main phase satisfy the following conditions: x and m are the values in a region bounded by the points, A: (0.53, 0.27), B: (0.64, 0.27), C: (0.64, 0.35), D: (0.53, 0.45), E: (0.47, 0.45) and F: (0.47, 0.32) in the (x, m) coordinates shown in FIG. 2; 1.3≦x/yz≦1.8; and 9.5≦12z≦11.0.

    摘要翻译： 本发明提供一种铁氧体磁性材料，即使在1150℃以下的温度下烧结也能够得到Br +（1/3）HcJ为6200以上的磁特性。 铁氧体磁性材料主要包括具有六方结构的铁素体相，主相由以下组成式（1）表示：LaxCamα1-x-m（Fe12-yCoy）z，其中α表示一个或两个 Ba和Sr; 其中构成主相的金属元素的组成比满足以下条件：x和m是由点限定的区域中的值，A：（0.53,0.27），B：（0.64,0 .27），C：（ 0.64,0.35），D：（0.53,0.45），E：（0.47,0.45）和F：（0.47,0.32）。 2; 1.3＆nlE; x / yz＆nlE; 1.8; 和9.5＆nlE; 12z＆nlE; 11.0。

    R-T-B system rare earth permanent magnet
    4.
    发明授权
    R-T-B system rare earth permanent magnet 有权
    R-T-B系稀土永磁铁

    公开(公告)号：US07314531B2

    公开(公告)日：2008-01-01

    申请号：US10799153

    申请日：2004-03-11

    申请人： Chikara Ishizaka ,  Gouichi Nishizawa ,  Tetsuya Hidaka ,  Akira Fukuno ,  Yoshinori Fujikawa

    发明人： Chikara Ishizaka ,  Gouichi Nishizawa ,  Tetsuya Hidaka ,  Akira Fukuno ,  Yoshinori Fujikawa

    IPC分类号： H01F1/057

    CPC分类号： H01F1/0577

    摘要： A sintered body comprising a main phase consisting of an R2T14B phase (wherein R represents one or more rare earth elements (providing that the rare earth elements include Y), and T represents one or more transition metal elements essentially containing Fe, or Fe and Co), and a grain boundary phase containing a higher amount of R than the main phase, wherein a platy or acicular product exists. This sintered body enables to inhibit the grain growth, while keeping a decrease in magnetic properties to a minimum, and to improve a suitable sintering temperature range.

    摘要翻译： 一种烧结体，其包含由R 2 2 T 14 B相构成的主相（其中R表示一种或多种稀土元素（使得稀土元素包括Y） ，T表示一种或多种基本上含有Fe或Fe和Co的过渡金属元素，以及含有比主相高的R的晶界相，其中存在片状或针状产物。 该烧结体能够抑制晶粒生长，同时将磁特性降低至最小，并提高合适的烧结温度范围。

    FERRITE MAGNETIC MATERIAL
    5.
    发明申请
    FERRITE MAGNETIC MATERIAL 有权
    铁素体磁性材料

    公开(公告)号：US20070138432A1

    公开(公告)日：2007-06-21

    申请号：US11611180

    申请日：2006-12-15

    申请人： Yoshihiko Minachi ,  Noboru Ito ,  Yuuki Aburakawa ,  Yoshinori Fujikawa ,  Satoko Ueda

    发明人： Yoshihiko Minachi ,  Noboru Ito ,  Yuuki Aburakawa ,  Yoshinori Fujikawa ,  Satoko Ueda

    IPC分类号： H01F1/00 ,  C04B35/40

    CPC分类号： C04B35/2633 ,  C04B35/2641 ,  C04B35/6262 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3227 ,  C04B2235/3277 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/5445 ,  C04B2235/605 ,  C04B2235/656 ,  C04B2235/6562

    摘要： The present invention provides a ferrite magnetic material capable of attaining such magnetic properties that Br+(⅓)HcJ is 6200 or more even by sintering at a temperature of 1150° C. or lower. The ferrite magnetic material includes as a main phase thereof a ferrite phase having a hexagonal structure, the main phase being represented by the following composition formula (1): LaxCamα1−x−m(Fe12−yCoy)z with α representing one or two of Ba and Sr; wherein the constituent ratios of the metal elements constituting the main phase satisfy the following conditions: x and m are the values in a region bounded by the points, A: (0.53, 0.27), B: (0.64, 0.27), C: (0.64, 0.35), D: (0.53, 0.45), E: (0.47, 0.45) and F: (0.47, 0.32) in the (x, m) coordinates shown in FIG. 2; 1.3≦x/yz≦1.8; and 9.5≦12z≦11.0.

    摘要翻译： 本发明提供一种铁氧体磁性材料，即使在1150℃以下的温度下烧结也能够获得Br +（1/3）HcJ为6200以上的磁特性。 铁氧体磁性材料主要包括具有六方结构的铁素体相，其主相由以下组成式（1）表示：La x Si x Ca α1-x M（Fe 12-y Co y z）Z a，其中α代表一个或两个Ba和 锶 其中构成主相的金属元素的组成比满足以下条件：x和m是由点限定的区域中的值，A：（0.53,0.27），B：（0.64,0 .27），C：（ 0.64,0.35），D：（0.53,0.45），E：（0.47,0.45）和F：（0.47,0.32）。 2; 1.3 <= x / yz <= 1.8; 和9.5 <= 12z <= 11.0。

    Dielectric ceramics and electronic component
    7.
    发明授权
    Dielectric ceramics and electronic component 失效

    公开(公告)号：US06548437B2

    公开(公告)日：2003-04-15

    申请号：US09835492

    申请日：2001-04-17

    申请人： Shigeki Sato ,  Yoshihiro Terada ,  Yoshinori Fujikawa

    发明人： Shigeki Sato ,  Yoshihiro Terada ,  Yoshinori Fujikawa

    IPC分类号： C04B35468

    CPC分类号： H01G4/1227

    摘要： Provided are dielectric ceramics and an electronic component capable of enhancing the longevity of insulation resistance under load at high temperature, namely, the so-called lifetime of IR degradation. A dielectric layer comprises dielectric ceramics containing BaTiO3 that is a main component; a first auxiliary component containing at least one element in a group consisting of Mg, Ca, Ba, Sr and Cr; a second auxiliary component containing SiO2; a third auxiliary component containing at least one element in a group consisting of V, Mo and W; and a fourth auxiliary component containing at least one element in a group consisting of Er, Tm, Yb, Y, Dy and Ho. Preferably, the rate of existence of crystal particles having voids in the dielectric ceramics is 10% or lower in terms of the count rate, and an average crystal particle diameter is more than 0.1 &mgr;m and not more than 0.7 &mgr;m. Thus, the lifetime of IR degradation is improved. Preferably, BaTiO3 powders synthesized by oxalate process or solid phase method and having a Ba/Ti ratio of more than 1 and less than 1.007 are used as a raw material.

    Manufacture method of dielectric ceramic composition
    8.
    发明授权
    Manufacture method of dielectric ceramic composition 失效
    电介质陶瓷组合物的制造方法

    公开(公告)号：US06544916B1

    公开(公告)日：2003-04-08

    申请号：US09857413

    申请日：2001-06-04

    申请人： Shigeki Sato ,  Yoshihiro Terada ,  Yoshinori Fujikawa

    发明人： Shigeki Sato ,  Yoshihiro Terada ,  Yoshinori Fujikawa

    IPC分类号： C04B35468

    CPC分类号： C04B35/4682 ,  H01G4/1227

    摘要： A method of manufacturing a dielectric ceramic composition comprising at least BaTiO3 as a main component, a second subcomponent having SiO2 as a main component and at least one type selected from MO (note that M is at least one type of element selected from Ba, Ca, Sr and Mg), Li2O and B2O3 and other subcomponents, comprising the steps of mixing in the main component at least part of other subcomponents except for the second subcomponent to prepare a pre-calcination powder, calcining said pre-calcination powder to prepare a calcined powder, and mixing at least said second subcomponent in said calcined powder to obtain a dielectric ceramic composition having ratios of the subcomponents to BaTiO3 as the main component of predetermined molar ratios.

    摘要翻译： 一种制造包含至少BaTiO 3作为主要成分的电介质陶瓷组合物的方法，具有SiO 2作为主要成分的第二次要成分和选自MO的至少一种类型（注意，M是选自Ba，Ca中的至少一种元素 ，Sr和Mg），Li 2 O和B 2 O 3等副成分，包括以下步骤：在主成分中除了第二副成分以外的至少一部分其他副成分混合以制备预煅烧粉末，煅烧所述预煅烧粉末以制备 煅烧粉末，并在所述煅烧粉末中混合至少所述第二次要组分，以获得具有作为主要组分的预定摩尔比的亚组分与BaTiO 3的比例的介电陶瓷组合物。

    Method of producing a powder, powder, and multilayered ceramic capacitor using the same
    10.
    发明授权
    Method of producing a powder, powder, and multilayered ceramic capacitor using the same 失效
    使用该粉末，粉末和多层陶瓷电容器的方法

    公开(公告)号：US07744954B2

    公开(公告)日：2010-06-29

    申请号：US11384508

    申请日：2006-03-21

    申请人： Yoshinori Fujikawa ,  Satoko Ueda ,  Kouji Tokita

    发明人： Yoshinori Fujikawa ,  Satoko Ueda ,  Kouji Tokita

    IPC分类号： B05D7/00

    CPC分类号： C04B35/4682 ,  C04B35/47 ,  C04B35/62821 ,  C04B35/62886 ,  C04B38/009 ,  C04B2111/00405 ,  C04B2111/00844 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3236 ,  C04B2235/96 ,  H01G4/1209 ,  H01G4/1218 ,  H01G4/30 ,  Y10T428/2991 ,  C04B35/468 ,  C04B41/5041 ,  C04B35/48 ,  C04B35/495

    摘要： A core/shell structured powder different in composition between the inside the particle and the surface thereof before sintering, so that it is possible to sinter the powder at lower temperature and give a core/shell structured powder having a shell portion uniform in thickness after sintering; a multilayered ceramic capacitor having a longer lifetime, by preparing the multilayered ceramic capacitor by using a powder having a core/shell structure different in composition between the inside the particle and the surface thereof before sintering; and a method of producing a powder by synthesizing particles in the liquid containing a raw material, wherein particles different in composition at least between the inside the particle and the surface thereof are obtained by adding a composition to be incorporated as a component of the particles to the liquid during the synthetic process so that the composition of the liquid changes continuously or intermittently.

    摘要翻译： 在烧结之前，颗粒内部和表面之间的组成不同的芯/壳结构粉末，使得可以在较低温度下烧结粉末，并得到烧结后具有均匀厚度的壳体部分的芯/壳结构粉末 ; 通过在烧结之前通过使用具有与颗粒内部和其表面之间的组成不同的核/壳结构的粉末来制备多层陶瓷电容器，具有更长寿命的多层陶瓷电容器; 以及通过在含有原料的液体中合成颗粒来制造粉末的方法，其中至少在颗粒内部和其表面之间至少在颗粒内部和/或表面之间的组成不同的颗粒通过将作为颗粒的组分掺入的组合物添加到 在合成过程中的液体，使得液体的组成连续或间歇地变化。