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53 条记录 (耗时 0.031 秒)

    Process for preparation of oxide magnetic compact
    41.
    发明授权
    Process for preparation of oxide magnetic compact 失效
    氧化物磁性体的制备方法

    公开(公告)号：US6113843A

    公开(公告)日：2000-09-05

    申请号：US274931

    申请日：1999-03-23

    申请人： Takuya Aoki ,  Taku Murase ,  Kazuhiro Takakura ,  Jun Sawai ,  Naoyoshi Sato

    发明人： Takuya Aoki ,  Taku Murase ,  Kazuhiro Takakura ,  Jun Sawai ,  Naoyoshi Sato

    IPC分类号： C01G49/00 ,  C04B35/26 ,  C04B35/38 ,  H01F1/34 ,  H01J29/76

    CPC分类号： H01J29/76 ,  C04B35/2625 ,  H01F1/344 ,  H01J2229/7031

    摘要： The process for the preparation of an oxide magnetic compact of the invention comprises:a step of preparing a mixed material which comprises 44 to 50 mole % of iron calculated as Fe.sub.2 O.sub.3, 0.1 to 8 mole % of manganese calculated as Mn.sub.2 O.sub.3, with the sum of iron and manganese being 50 to 54 mole % calculated as Fe.sub.2 O.sub.3 and Mn.sub.2 O.sub.3, 20 to 38 mole % of magnesium calculated as MgO, 17 to 22 mole % of zinc calculated as ZnO and not more than 5 mole % of copper calculated as CuO, anda step of molding the aforesaid mixed material to a predetermined shape and then firing it in an atmosphere of low oxygen concentration of 2.5 to 12% by volume. Therefore, there appears an extremely excellent effect that the oxide magnetic compact having excellent electromagnetic properties can be obtained at low cost.

    摘要翻译： 制备本发明的氧化物磁性压块的方法包括：制备混合材料的步骤，该混合材料包含以Fe 2 O 3计为44〜50摩尔％的铁，以Mn 2 O 3计为0.1〜8摩尔％的锰， 按Mn计算的铁和锰为50〜54摩尔％，以MgO计为20〜38摩尔％的镁，以ZnO计为17〜22摩尔％的锌，以CuO计为5摩尔％以下的铜， 将上述混合材料成型为规定形状，然后在低氧浓度为2.5〜12体积％的气氛中烧成的工序。 因此，可以以低成本获得具有优异的电磁特性的氧化物磁性粉末的极好的效果。

    System for determining deterioration of catalysts of internal combustion engines
    43.
    发明授权
    System for determining deterioration of catalysts of internal combustion engines 失效
    用于确定内燃机催化剂劣化的系统

    公开(公告)号：US5325664A

    公开(公告)日：1994-07-05

    申请号：US961794

    申请日：1992-10-16

    申请人： Yasunari Seki ,  Toshihiko Sato ,  Katuhiro Kumagai ,  Hiroshi Maruyama ,  Yoichi Iwata ,  Tsuyoshi Takizawa ,  Kenichi Maeda ,  Shigetaka Kuroda ,  Masataka Chikamatsu ,  Shukoh Terata ,  Kazutomo Sawamura ,  Hajime Uto ,  Takuya Aoki ,  Makoto Kobayashi

    发明人： Yasunari Seki ,  Toshihiko Sato ,  Katuhiro Kumagai ,  Hiroshi Maruyama ,  Yoichi Iwata ,  Tsuyoshi Takizawa ,  Kenichi Maeda ,  Shigetaka Kuroda ,  Masataka Chikamatsu ,  Shukoh Terata ,  Kazutomo Sawamura ,  Hajime Uto ,  Takuya Aoki ,  Makoto Kobayashi

    IPC分类号： F01N11/00 ,  F01N13/02 ,  F02F3/26

    CPC分类号： F01N11/002 ,  F01N11/007 ,  F01N13/009 ,  F01N2550/02 ,  F01N2900/0422 ,  Y02T10/47

    摘要： A catalyst deterioration-determining system determines deterioration of a catalyst arranged in the exhaust passage of an internal combustion engine. An ECU is responsive to an output from an O.sub.2 sensor arranged upstream of the catalyst or outputs from O.sub.2 sensors arranged upstream and downstream of the catalyst for controlling the air-fuel ratio of a mixture supplied to the engine by means of an air-fuel ratio correction value (first air-fuel ratio control). When the engine is in a predetermined operating condition, the system effects changeover from the first air-fuel ratio control to a second air-fuel ratio control which is responsive to the output from the downstream O.sub.2 sensor for controlling the air-fuel ratio of the mixture by means of the air-fuel ratio correction value. After the changeover has been effected, a time period is measured which elapses from the time the second air-fuel ratio control causes a change in the air-fuel ratio correction value from a richer side to a leaner side or vice versa with respect to a stoichiometric air-fuel ratio to the time the output from the downstream O.sub.2 sensor is inverted from the richer side to the leaner side or vice versa with respect to the stoichiometric air-fuel ratio. It is determined that the catalyst is deteriorated, when the measured time period is shorter than the predetermined time period.

    摘要翻译： 催化剂劣化确定系统确定布置在内燃机的排气通道中的催化剂的劣化。 ECU响应于设置在催化剂上游的O 2传感器的输出或者从设置在催化剂上游和下游的O2传感器输出，用于通过空燃比控制供给发动机的混合物的空燃比 校正值（第一空燃比控制）。 当发动机处于预定的运行状态时，该系统实现从第一空燃比控制切换到第二空燃比控制，第二空燃比控制响应于来自下游O2传感器的输出，用于控制发动机的空燃比 通过空燃比校正值进行混合。 在切换已经实现之后，测量从第二空燃比控制引起空燃比校正值从更丰富侧到更瘦侧的变化时间经过的时间段，反之亦然 化学计量空燃比与下游O2传感器的输出相对于化学计量空燃比从更丰富的一侧反转到更稀的侧，反之亦然。 当测量的时间段短于预定时间段时，确定催化剂劣化。

    Method of producing MnZn-base ferrite
    44.
    发明授权
    Method of producing MnZn-base ferrite 有权
    生产MnZn基铁素体的方法

    公开(公告)号：US07713465B2

    公开(公告)日：2010-05-11

    申请号：US12053082

    申请日：2008-03-21

    申请人： Shenglei Che ,  Kentaro Mori ,  Masahiko Watanabe ,  Takuya Aoki ,  Tomofumi Kuroda

    发明人： Shenglei Che ,  Kentaro Mori ,  Masahiko Watanabe ,  Takuya Aoki ,  Tomofumi Kuroda

    IPC分类号： C04B33/32

    CPC分类号： H01F1/344 ,  C01G49/0018 ,  C01G49/009 ,  C01G53/006 ,  C01P2002/52 ,  C01P2006/80 ,  C04B35/265 ,  C04B35/6262 ,  C04B35/62695 ,  C04B2235/3203 ,  C04B2235/3208 ,  C04B2235/3239 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3279 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/5427 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6584

    摘要： Provided is a process for producing a MnZn-base ferrite comprising: firing a compacted raw material to produce the MnZn-base ferrite, wherein the firing comprises, in the following order: a heating phase comprising gradually bringing a firing temperature from room temperature up to a maximum temperature; a maximum temperature holding phase comprising maintaining the maximum temperature for a period of time, wherein a partial pressure of oxygen (p2) at the maximum temperature holding phase is greater than an equilibrium partial pressure of oxygen (p1) as follows: p2>p1, wherein the equilibrium partial pressure of oxygen (p1) is represented by the following equation: log(p1)=log(PO2)=a−b/T, wherein PO2 is measured in a unit of %, and T is measured in a unit of absolute temperature K; and a cooling phase comprising gradually bringing the maximum temperature down to near room temperature, wherein a partial pressure of oxygen (p3) at the cooling phase is operated at an equilibrium partial pressure of oxygen based on the equation log(p3)=a−b/T.

    摘要翻译： 提供了一种MnZn基铁素体的制造方法，其特征在于，包括：烧结压实的原料以制造所述MnZn基铁氧体，其中所述烧制按以下顺序包括：加热阶段，包括逐渐使焙烧温度从室温升至 最高温度; 最大温度保持阶段包括将最高温度保持一段时间，其中在最高温度保持阶段的氧分压（p2）大于氧的平衡分压（p1），如下：p2> p1， 其中氧的平衡分压（p1）由以下等式表示：log（p1）= log（PO2）= a-b / T，其中PO2以％为单位测量，T以单位测量 绝对温度K; 和冷却阶段，其包括使最高温度逐渐降至接近室温，其中在冷却阶段的氧（p3）分压基于等式log（p3）= a-b在氧的平衡分压下操作 / T。

    Ferrite material
    46.
    发明申请
    Ferrite material 失效
    铁氧体材料

    公开(公告)号：US20050258393A1

    公开(公告)日：2005-11-24

    申请号：US11133810

    申请日：2005-05-19

    申请人： Shin Takane ,  Takuya Aoki

    发明人： Shin Takane ,  Takuya Aoki

    IPC分类号： C04B35/26 ,  C01G49/00 ,  C01G53/00 ,  H01F1/00 ,  H01F1/34

    CPC分类号： C04B35/265 ,  C01G49/0018 ,  C01G49/0063 ,  C01G53/006 ,  C01P2004/02 ,  C01P2006/10 ,  C01P2006/42 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/727 ,  C04B2235/77 ,  C04B2235/784 ,  C04B2235/786 ,  H01F1/344

    摘要： The temperature properties of the initial permeability of a Ni—Cu—Zn based ferrite material are improved while the degradation of the magnetic properties of the ferrite material is being suppressed. The ferrite material is formed of a sintered body comprising, as main constituents, Fe2O3: 47.0 to 50.0 mol %, CuO: 0 to 7 mol %, NiO: 13 to 26 mol %, and ZnO substantially constituting the balance, wherein the sintered body comprises 40 ppm or less of P in terms of P2O5 and 50 to 1800 ppm of one or more additives of Al2O3, CaO and MgO in relation to the sum of the contents of the main constituents. In the Ni—Cu—Zn based ferrite material, the mean grain size can be set at 12 μm or less and the standard deviation of the grain size can be set at 4.5 μm or less.

    摘要翻译： Ni-Cu-Zn系铁氧体材料的初始磁导率的温度特性得到改善，同时抑制了铁氧体材料的磁特性的劣化。 铁氧体材料由以下组成的烧结体形成：作为主要成分的Fe 2 O 3：47.0〜50.0摩尔％，CuO：0〜7摩尔％，NiO： 13〜26摩尔％，基本上构成余量的ZnO，其中，烧结体包含40ppm以下的P，以P为2〜5的比例为50〜1800ppm 的一种或多种Al 2 O 3 3，CaO和MgO的添加剂相对于主要成分的含量之和。 在Ni-Cu-Zn系铁氧体材料中，平均粒径可以设定为12μm以下，粒径的标准偏差可以设定为4.5μm以下。

    Ferrite material
    47.
    发明授权
    Ferrite material 失效
    铁氧体材料

    公开(公告)号：US07524433B2

    公开(公告)日：2009-04-28

    申请号：US11133810

    申请日：2005-05-19

    申请人： Shin Takane ,  Takuya Aoki

    发明人： Shin Takane ,  Takuya Aoki

    IPC分类号： H01F1/34

    CPC分类号： C04B35/265 ,  C01G49/0018 ,  C01G49/0063 ,  C01G53/006 ,  C01P2004/02 ,  C01P2006/10 ,  C01P2006/42 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/727 ,  C04B2235/77 ,  C04B2235/784 ,  C04B2235/786 ,  H01F1/344

    摘要： The temperature properties of the initial permeability of a Ni—Cu—Zn based ferrite material are improved while the degradation of the magnetic properties of the ferrite material is being suppressed. The ferrite material is formed of a sintered body comprising, as main constituents, Fe2O3: 47.0 to 50.0 mol %, CuO: 0 to 7 mol %, NiO: 13 to 26 mol %, and ZnO substantially constituting the balance, wherein the sintered body comprises 40 ppm or less of P in terms of P2O5 and 50 to 1800 ppm of one or more additives of Al2O3, CaO and MgO in relation to the sum of the contents of the main constituents. In the Ni—Cu—Zn based ferrite material, the mean grain size can be set at 12 μm or less and the standard deviation of the grain size can be set at 4.5 μm or less.

    摘要翻译： Ni-Cu-Zn系铁氧体材料的初始磁导率的温度特性得到改善，同时抑制了铁氧体材料的磁特性的劣化。 所述铁氧体材料由Fe 2 O 3：47.0〜50.0摩尔％，CuO：0〜7摩尔％，NiO：13〜26摩尔％以及构成余量的ZnO组成的烧结体形成，其中，烧结体 相对于主要成分的含量之和，相对于P2O5为40ppm以下，P为40ppm以下，Al2O3，CaO，MgO的添加量为50〜1800ppm。 在Ni-Cu-Zn系铁氧体材料中，平均粒径可以设定为12μm以下，粒径的标准偏差可以设定为4.5μm以下。