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AssigneeDai Nippon Insatsu Kabushiki Kaisha
InventorsHiroshi Yagi, Takanori Maeda, Yoshinori Oota, Yasuhiro Uchida
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In a through hole closing process, a metal plate is attached to one surface of a conductive base member having a plurality of through holes by the use of a magnet, in a copper plating process, a copper plating layer is formed on the conductive base member and the metal plate exposed within the through holes, from the side of the conductive base member where the metal plate is not attached, thereby to fill up the through holes, in a film forming process, a Pd alloy film is formed by plating on the surface of the conductive base member after removal of the metal plate, and in a removal process, the copper plating layer is removed by selective etching, thereby to produce a hydrogen production filter that is used in a reformer of a fuel cell so as to be capable of stably producing high purity hydrogen gas.
A production method of a hydrogen production filter, comprising a sticking step of sticking an insulating film to one surface of a conductive base member having a plurality of through holes, a copper plating step of forming a copper plating layer on a surface of said conductive base member where said insulating film is not stuck, so as to fill up said through holes, a film forming step of forming a Pd alloy film by plating on the surface of the conductive base member after removal of said insulating film, and a removal step of removing said copper plating layer by selective etching.
Dependencies are inferred from the claim text.