Loading patent…
AssigneeDai Nippon Insatsu Kabushiki Kaisha
InventorsHiroshi YAGI, Takanori MAEDA, Yoshinori OOTA, Yasuhiro UCHIDA
Estimating the term…
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, characterized by comprising a filling step of filling a resin material into through holes of a conductive base member having the plurality of through holes, an underlayer forming step of forming a Pd alloy film on one surface of said conductive base member by either of electroless plating and a vacuum film forming method, thereby to form a conductive underlayer, a film forming step of forming a Pd alloy film by plating on said conductive underlayer, and a removal step of dissolving and removing only said resin material.
A production method of a hydrogen production filter, characterized by comprising an etching step of forming predetermined resist patterns on both surfaces of a conductive base member, and etching said conductive base member from both sides using said resist patterns as masks to form a plurality of through holes, a film forming step of forming a Pd alloy film by electrolytic plating so as to close the inside of said through holes of said conductive base member, and a removal step of removing said resist patterns.
Dependencies are inferred from the claim text.