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
    31.
    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

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

    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。

    Separator for fuel cell, fuel cell stack, method for manufacturing separator for fuel cell, and fuel cell vehicle
    37.
    发明申请
    Separator for fuel cell, fuel cell stack, method for manufacturing separator for fuel cell, and fuel cell vehicle 审中-公开
    燃料电池用分离器,燃料电池堆,燃料电池用隔板的制造方法以及燃料电池车辆

    公开(公告)号:US20070037033A1

    公开(公告)日:2007-02-15

    申请号:US10572741

    申请日:2004-08-19

    摘要: A separator for a fuel cell comprises a corrugated or undulated gas flow path portion (4) formed on central portion (2) of a clad thin plate: and a flat portion (6) formed on an outer periphery of the central portion, wherein the clad thin plate is obtained by applying rolling work on a metal plate whose surface is covered with a precious metal layer at a draft of 5% to 15% to make clad, and a limit plate thickness residual rate indicating a boundary limit in which cracking of the precious metal layer in the clad thin plate and reduction of corrosion resistance due to exposure of the metal plate are negligible is obtained in advance, wherein regarding a sectional shape in a direction orthogonal to a flow path of the gas flow path portion (4), when a plate thickness of the thinnest portion of a rib shoulder portion is represented as t2 and a plate thickness of a peripheral portion of the separator is represented as t4, a relationship of t2≧t4×limit plate thickness residual rate is satisfied.

    摘要翻译: 燃料电池用隔板包括形成在包层薄板的中央部(2)上的波纹状或波状的气体流路部(4)和形成在中央部的外周的平坦部(6),其中, 通过在表面覆盖有贵金属层的金属板上以5%〜15%的压下量进行轧制加工,得到包层薄板,制成包层,限制板厚残留率表示边界极限, 预先获得包覆薄板中的贵金属层和由金属板的暴露引起的耐腐蚀性的降低,其中关于与气体流路部分(4)的流动路径正交的方向上的截面形状, 当肋肩部的最薄部分的板厚被表示为t 2,并且隔板的周边部分的板厚表示为t 4时,t 2> = t 4×限制板厚度残差的关系 价格满意。