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    Transition metal nitride, separator for fuel cells, fuel cell stack, fuel cell vehicle, method of manufacturing transition metal nitride, and method of manufacturing separator for fuel cells
    1.
    发明授权
    Transition metal nitride, separator for fuel cells, fuel cell stack, fuel cell vehicle, method of manufacturing transition metal nitride, and method of manufacturing separator for fuel cells 失效
    过渡金属氮化物，燃料电池用隔板，燃料电池堆，燃料电池车辆，过渡金属氮化物的制造方法以及燃料电池用隔板的制造方法

    公开(公告)号：US08298724B2

    公开(公告)日：2012-10-30

    申请号：US12529469

    申请日：2008-03-06

    申请人： Noriko Uchiyama ,  Nobutaka Chiba

    发明人： Noriko Uchiyama ,  Nobutaka Chiba

    IPC分类号： H01M4/64 ,  C23C8/36 ,  C23C8/26 ,  B60K1/00

    CPC分类号： H01M8/0228 ,  C23C8/24 ,  C23C8/26 ,  C23C8/36 ,  H01M8/0206 ,  H01M8/021 ,  H01M8/0215 ,  H01M8/026 ,  Y02P70/56

    摘要： A transition metal nitride obtained by nitriding a base material including an austenitic stainless steel having a Cr concentration of 25% or more includes a first layer (first nitrided layer) formed continuously on a base layer formed by the base material, having a stacked crystal structure of a nano-level including a nitride having a cubic crystal structure of M4N type, and a nitride having a hexagonal crystal structure of M2-3N type, and a second layer (second nitrided layer) formed continuously on the first layer, including a nitride having at least one kind of crystal structure out of hexagonal crystal structures of Cr2N, CrN, and M2-3N type, and a cubic crystal structure of M4N type, and being formed as a surface-nitriding-processed portion of the base material continuously in a depth direction from a surface of the base material.

    摘要翻译： 通过氮化包含Cr浓度为25％以上的奥氏体不锈钢的基材而获得的过渡金属氮化物包括在由基材形成的基底层上连续形成的具有堆叠晶体结构的第一层（第一氮化层） 包括具有M4N型立方晶体结构的氮化物的纳米级，以及具有M2-3N型六方晶系结构的氮化物和在第一层上连续形成的第二层（第二氮化层），包括氮化物 具有Cr2N，CrN和M2-3N型的六方晶系晶体结构中的至少一种晶体结构和M4N型的立方晶体结构，并连续地形成为基材的表面氮化处理部分 从基材的表面的深度方向。

    TRANSITION METAL NITRIDE, FUEL CELL SEPARATOR, METHOD FOR PRODUCING TRANSITION METAL NITRIDE, METHOD FOR PRODUCING FUEL CELL SEPARATOR, FUEL CELL STACK AND FUEL CELL VEHICLE
    3.
    发明申请
    TRANSITION METAL NITRIDE, FUEL CELL SEPARATOR, METHOD FOR PRODUCING TRANSITION METAL NITRIDE, METHOD FOR PRODUCING FUEL CELL SEPARATOR, FUEL CELL STACK AND FUEL CELL VEHICLE 审中-公开
    过渡金属氮化物，燃料电池分离器，生产过渡金属氮化物的方法，生产燃料电池分离器的方法，燃料电池堆和燃料电池车

    公开(公告)号：US20080076001A1

    公开(公告)日：2008-03-27

    申请号：US11834995

    申请日：2007-08-07

    申请人： Noriko Uchiyama ,  Nobutaka Chiba ,  Makoto Kano

    发明人： Noriko Uchiyama ,  Nobutaka Chiba ,  Makoto Kano

    IPC分类号： C23C8/04 ,  C23C8/26 ,  H01M2/16

    CPC分类号： H01M8/021 ,  C04B35/58007 ,  C04B35/58042 ,  C04B2235/762 ,  C04B2235/767 ,  C23C8/38 ,  H01M8/0215 ,  H01M8/0228 ,  H01M8/0254 ,  H01M2008/1095 ,  H01M2250/20 ,  Y02P70/56 ,  Y02T90/32

    摘要： A transition metal nitride comprises a first layer formed of a nitride of a stainless steel containing at least Fe and Cr and a second layer formed on the first layer and having an exposed surface. The second layer is formed of another nitride having contents of components that differ from those in the first layer. The first and second layers have a composition distribution in which a Cr concentration is continuously changed from the first layer to the second layer in a thickness direction of these layers, and the second layer has a nitride deposition protruding from a base portion of an exposed surface. A fuel cell separator comprises a base layer formed of a stainless steel containing at least Fe and Cr and a nitride layer formed of a transition metal nitride as described. Methods of forming transition metal nitrides and fuel cell separators are also included, as is a fuel cell vehicle including a fuel cell stack.

    摘要翻译： 过渡金属氮化物包括由至少含有Fe和Cr的不锈钢的氮化物形成的第一层和形成在第一层上并具有暴露表面的第二层。 第二层由具有与第一层不同的成分含量的另一种氮化物形成。 第一层和第二层具有其中Cr浓度在这些层的厚度方向上从第一层连续地变化到第二层的组成分布，并且第二层具有从暴露表面的基部突出的氮化物沉积 。 燃料电池分离器包括由至少含有Fe和Cr的不锈钢形成的基底层和由如上所述的过渡金属氮化物形成的氮化物层。 还包括形成过渡金属氮化物和燃料电池隔板的方法，以及包括燃料电池堆的燃料电池车辆。

    Fuel cell separator, fuel cell stack, fuel cell vehicle, and method of manufacturing fuel cell separator
    5.
    发明申请
    Fuel cell separator, fuel cell stack, fuel cell vehicle, and method of manufacturing fuel cell separator 审中-公开
    燃料电池分离器，燃料电池堆，燃料电池车以及制造燃料电池分离器的方法

    公开(公告)号：US20060040165A1

    公开(公告)日：2006-02-23

    申请号：US11220982

    申请日：2005-09-08

    申请人： Noriko Uchiyama ,  Nobutaka Chiba ,  Makoto Kano

    发明人： Noriko Uchiyama ,  Nobutaka Chiba ,  Makoto Kano

    IPC分类号： H01M8/02 ,  B32B15/04 ,  B05D5/12

    CPC分类号： H01M8/021 ,  H01M8/0215 ,  H01M8/0228 ,  Y02P70/56

    摘要： A fuel cell separator of the present invention includes: a base material which is made of transition metal or an alloy of transition metal and has a path for fuel or an oxidant; and a nitride layer which is provided from a surface of the base material towards an inside thereof, contacts a single cell of a fuel cell, and has a cubic crystal structure. The fuel cell separator has excellent corrosion resistance in a strong acid atmosphere and low contact resistance with a carbon paper that configures a gas diffusion layer.

    摘要翻译： 本发明的燃料电池用隔板包括：基体材料，其由过渡金属或过渡金属的合金制成，具有用于燃料或氧化剂的路径; 并且从基材的表面向其内侧提供的氮化物层与燃料电池的单个电池接触，并且具有立方晶体结构。 燃料电池分离器在强酸性气氛中具有优异的耐腐蚀性，并且与构成气体扩散层的碳纸具有低接触电阻。

    TRANSITION METAL NITRIDE, SEPARATOR FOR FUEL CELLS, FUEL CELL STACK, FUEL CELL VEHICLE, METHOD OF MANUFACTURING TRANSITION METAL NITRIDE, AND METHOD OF MANUFACTURING SEPARATOR FOR FUEL CELLS
    6.
    发明申请
    TRANSITION METAL NITRIDE, SEPARATOR FOR FUEL CELLS, FUEL CELL STACK, FUEL CELL VEHICLE, METHOD OF MANUFACTURING TRANSITION METAL NITRIDE, AND METHOD OF MANUFACTURING SEPARATOR FOR FUEL CELLS 失效
    过渡金属氮化物，燃料电池用分离器，燃料电池堆，燃料电池车，制造金属过渡金属的方法以及制造用于燃料电池的分离器的方法

    公开(公告)号：US20100021796A1

    公开(公告)日：2010-01-28

    申请号：US12529469

    申请日：2008-03-06

    申请人： Noriko Uchiyama ,  Nobutaka Chiba

    发明人： Noriko Uchiyama ,  Nobutaka Chiba

    IPC分类号： H01M2/00 ,  C22C38/00 ,  C23C8/38 ,  B60K1/00

    CPC分类号： H01M8/0228 ,  C23C8/24 ,  C23C8/26 ,  C23C8/36 ,  H01M8/0206 ,  H01M8/021 ,  H01M8/0215 ,  H01M8/026 ,  Y02P70/56

    摘要： A transition metal nitride obtained by nitriding a base material including an austenitic stainless steel having a Cr concentration of 25% or more includes a first layer (first nitrided layer) formed continuously on a base layer formed by the base material, having a stacked crystal structure of a nano-level including a nitride having a cubic crystal structure of M4N type, and a nitride having a hexagonal crystal structure of M2-3N type, and a second layer (second nitrided layer) formed continuously on the first layer, including a nitride having at least one kind of crystal structure out of hexagonal crystal structures of Cr2N, CrN, and M2-3N type, and a cubic crystal structure of M4N type, and being formed as a surface-nitriding-processed portion of the base material continuously in a depth direction from a surface of the base material.

    摘要翻译： 通过氮化包含Cr浓度为25％以上的奥氏体不锈钢的基材而获得的过渡金属氮化物包括在由基材形成的基底层上连续形成的具有堆叠晶体结构的第一层（第一氮化层） 包括具有M4N型立方晶体结构的氮化物的纳米级，以及具有M2-3N型六方晶系结构的氮化物和在第一层上连续形成的第二层（第二氮化层），包括氮化物 具有由Cr2N，CrN和M2-3N型的六方晶系结构中的至少一种晶体结构和M4N型的立方晶体结构，并连续地形成为基材的表面氮化处理部分 从基材的表面的深度方向。

    Fuel cell separator, fuel cell stack, fuel cell vehicle, and method of manufacturing fuel cell separator
    8.
    发明申请
    Fuel cell separator, fuel cell stack, fuel cell vehicle, and method of manufacturing fuel cell separator 审中-公开
    燃料电池分离器，燃料电池堆，燃料电池车以及制造燃料电池分离器的方法

    公开(公告)号：US20050202302A1

    公开(公告)日：2005-09-15

    申请号：US11071286

    申请日：2005-03-04

    申请人： Noriko Uchiyama ,  Nobutaka Chiba ,  Makoto Kano

    发明人： Noriko Uchiyama ,  Nobutaka Chiba ,  Makoto Kano

    IPC分类号： H01M8/02 ,  B05D5/12 ,  B32B15/04

    CPC分类号： H01M8/021 ,  H01M8/0215 ,  H01M8/0228 ,  Y02P70/56 ,  Y10T428/31678

    摘要： A fuel cell separator of the present invention includes a base material made of stainless steel, and a nitride compound layer provided on a surface of the base material. Further, a method of manufacturing the fuel cell separator includes a step of preparing the base material made of stainless steel; and a step of nitriding the surface of the base material at 590° C. or lower to form on the surface of the base material a nitride compound layer having a crystal structure where a nitrogen atom is located in an octahedral hole at a center of a unit cell of a face-centered cubic lattice formed of at least one or more kinds of metal atoms selected from iron, chromium, nickel and molybdenum. The fuel cell separator has low contact resistance produced between the separator and an electrode, excellent corrosion resistance.

    摘要翻译： 本发明的燃料电池用隔板包括由不锈钢制成的基材和在基材的表面上设置的氮化物复合层。 此外，制造燃料电池隔板的方法包括：准备由不锈钢制成的基材的工序; 以及在590℃以下氮化基材表面的步骤，以在基材表面形成具有氮原子位于八面体孔的中心的晶体结构的氮化物化合物层 由选自铁，铬，镍和钼的至少一种或多种金属原子形成的面心立方晶格的晶胞。 燃料电池分离器在隔膜和电极之间产生的接触电阻低，耐腐蚀性优异。