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    Separator for fuel cell
    2.
    发明授权
    Separator for fuel cell 失效
    燃料电池分离器

    公开(公告)号：US07014938B2

    公开(公告)日：2006-03-21

    申请号：US10477135

    申请日：2002-07-22

    申请人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya

    发明人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya

    IPC分类号： H01M2/00

    CPC分类号： H01M8/0206 ,  H01M8/0228 ,  Y10T428/12569 ,  Y10T428/12889

    摘要： A separator for fuel cells which has a gold covering layer on the surface of a metal plate and is formed by plastic working, wherein the relationship (R+D)/R≦1.025 (50 μm≦R≦1000 μm) is satisfied assuming the minimum bending radius R at a plastic worked portion is R (μm), and the thickness of the gold covering layer is D (μm). According to the separator for fuel cells, exfoliation or cracking is prevented in the gold covering layer after plastic working, whereby corrosion resistance and durability can be remarkably improved.

    摘要翻译： 一种用于燃料电池的隔板，其在金属板的表面上具有金覆盖层，并且通过塑性加工形成，其中，（R + D）/ R <= 1.025（50μm<= R <=1000μm） 假设塑性加工部分的最小弯曲半径R为R（mum），金覆盖层的厚度为D（mum）。 根据燃料电池用隔板，塑料加工后的金覆盖层防止剥离或开裂，能够显着提高耐腐蚀性和耐久性。

    Metal separator for fuel cell and its production method
    5.
    发明授权
    Metal separator for fuel cell and its production method 失效
    燃料电池用金属分离器及其制造方法

    公开(公告)号：US07507490B2

    公开(公告)日：2009-03-24

    申请号：US10496317

    申请日：2002-11-01

    申请人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya ,  Koji Kotani

    发明人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya ,  Koji Kotani

    IPC分类号： H01M2/00

    CPC分类号： H01M8/0223 ,  H01M8/0206 ,  H01M8/0254 ,  H01M8/026 ,  Y02P70/56

    摘要： A metallic separator in which falling off of the conductive inclusions projecting from a matrix surface is prevented, whereby the contact resistance is decreased, resulting in increasing the characteristics for generation of electrical energy. A metallic separator for a fuel cell comprises conductive inclusions in a metal structure, and the conductive inclusions project from a surface of a matrix to a height of 1 to 3 micrometers.

    摘要翻译： 防止从基体表面突出的导电性夹杂物脱落的金属隔板，由此接触电阻降低，导致电能的产生的特性增加。 用于燃料电池的金属隔板包括金属结构中的导电夹杂物，并且导电夹杂物从基质表面突出到1至3微米的高度。

    Separator for fuel cell and method for producing the same
    6.
    发明授权
    Separator for fuel cell and method for producing the same 失效
    燃料电池用分离器及其制造方法

    公开(公告)号：US07001683B2

    公开(公告)日：2006-02-21

    申请号：US10245301

    申请日：2002-09-18

    申请人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya

    发明人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya

    IPC分类号： H01M8/02 ,  B05D5/12

    CPC分类号： H01M8/0206 ,  C25D5/36 ,  H01M8/021 ,  H01M8/0228 ,  Y10T428/12889 ,  Y10T428/12951

    摘要： A separator for a fuel cell includes a gold covering layer formed on the surface of stainless steel plate. A method for producing a separator, prevents exfoliation and fracture of the gold covering layer but obtains corrosion resistance and durability. Voids are formed by intergranular corrosion treatment at a surface of the stainless steel plate, and the gold covering layer is formed so as to be embedded in the voids. Limit value of radius of curvature in bends in which exfoliations or fractures in the gold covering layer is formed can be reduced by satisfying the equation 0.2≦4/d/L≦80 wherein L(μm) is the average grain size of the surface of stainless steel plate, and d(μm) is the thickness of the gold covering layer.

    摘要翻译： 用于燃料电池的隔板包括形成在不锈钢板表面上的金覆盖层。 隔膜的制造方法，能够防止金覆盖层的剥离和断裂，但是具有耐腐蚀性和耐久性。 在不锈钢板的表面通过晶间腐蚀处理形成空隙，并且形成金覆盖层以嵌入空隙中。 可以通过满足方程式0.2 <= 4 / d / L <= 80，其中L（mum）是平均晶粒尺寸，可以减少形成金覆盖层中的剥离或断裂的弯曲中的曲率半径的极限值 不锈钢板表面，d（mum）是镀金层的厚度。

    METHOD FOR MANUFACTURING FUEL CELL METALLIC SEPARATOR
    8.
    发明申请
    METHOD FOR MANUFACTURING FUEL CELL METALLIC SEPARATOR 审中-公开

    公开(公告)号：US20080292937A1

    公开(公告)日：2008-11-27

    申请号：US11966374

    申请日：2007-12-28

    申请人： Teruyuki OHTANI ,  Makoto Tsuji ,  Masao Utsunomiya ,  Koji Kotani

    发明人： Teruyuki OHTANI ,  Makoto Tsuji ,  Masao Utsunomiya ,  Koji Kotani

    IPC分类号： H01M2/00

    CPC分类号： H01M8/0206 ,  H01M8/0228 ,  H01M8/0254 ,  H01M8/026 ,  Y02P70/56 ,  Y10T29/49108

    摘要： A metallic separator according to a first embodiment is formed by obtaining a blank by rolling a metallic material having conductive inclusions, and removing a surface of the blank by 2% or more of the thickness of the blank. A metallic separator according to a second embodiment is formed by pressing a metallic plate so as to have a cross section including ridges and grooves alternatively, and removing parts of the ridged portions so as to make flattened surfaces. A metallic separator having conductive inclusions in its metal texture according to a third embodiment is formed by blasting a liquid containing two or more kinds of abrasives having different particle diameters to a blank after it has been rolled. A metallic separator having conductive inclusion in its metal texture according to a fourth embodiment is formed by blasting a passivation treatment liquid mixed with abrasives to the separator.

    Method of surface treatment for stainless steel product for fuel cell
    10.
    发明授权
    Method of surface treatment for stainless steel product for fuel cell 失效
    燃料电池不锈钢产品表面处理方法

    公开(公告)号：US06884363B2

    公开(公告)日：2005-04-26

    申请号：US10169791

    申请日：2001-11-06

    申请人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya

    发明人： Teruyuki Ohtani ,  Makoto Tsuji ,  Masao Utsunomiya

    IPC分类号： C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C23C22/50 ,  C23C26/00 ,  C23C28/00 ,  C23F1/00 ,  C25F3/06

    CPC分类号： H01M8/0223 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C23C22/50 ,  C23C26/00 ,  C23G1/086 ,  H01M8/021 ,  H01M8/0213

    摘要： A method for treating the surface of a stainless steel product for a fuel cell containing, in wt %, 0.15% or less of C, 17 to 36% of Cr, 0.005 to 3.5% of B, which comprises the first step of forming in advance a passive film with an oxidizing acid on the surface of the stainless steel product, the second step of allowing an aqueous acid solution to corrode the passive film, to thereby project one or more of a M23C6 type carbide, a M23(C, B)6 type borocarbide and M2B type boride, which are inclusions having good electroconductivity, the third step of forming a passive coating film with an oxidizing acid on the surface of the steel product except that of the inclusion above projected, and the fourth step of washing with water and drying. The method of treatment allows, without the use of a method requiring a high cost such as gold plating, the improvement in the contact resistance of the stainless steel product for a fuel cell, which results in the retention of excellent characteristics of a stainless steel product over a long period of time.

    摘要翻译： 一种用于处理燃料电池的不锈钢产品的表面的方法，所述燃料电池含有以重量％计含量为0.15％或更少的C，17至36％的Cr，0.005至3.5％的B，其包括第一步形成 在不锈钢产品的表面上推进具有氧化酸的钝化膜，第二步是使酸性水溶液腐蚀钝化膜，从而投入一个或多个M 23 C 类型碳化物，M 23（C，B）6碳化硼和M 2 B型硼化物， 其是具有良好导电性的夹杂物，除了上述夹杂物以外，在钢制品的表面上形成具有氧化性酸的钝化涂膜的第三步骤，以及用水洗涤和干燥的第四步骤。 该处理方法不需要使用诸如镀金等高成本的方法，能够提高燃料电池用不锈钢制品的接触电阻，从而保持不锈钢制品的优异特性 在很长一段时间内。