| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bipolar metal separator for a fuel cell, which is made of stainless steel or the like and has adjacent metal separators firmly and surely jointed, and to provide its manufacturing method. <P>SOLUTION: The method for manufacturing a bipolar metal separator P3 of a fuel cell includes: a step S1 of cleaning front and back surfaces 4, 5 of a base board 1 on a steel plate P0 of a thickness of approximately 0.1 mm made of the stainless steel (SUS316L), including degreasing of them; a step S2 of removing a passivated film 2 by applying acid treatment on the degreased and cleaned front and back surfaces 4, 5 of the base board 1; a step S3 of manufacturing a blank plate P1 for a metal separator by coating an Au layer (a thin film layer of noble metal) 3 at a thickness of 0.5-60 nm by electrolytic plating on the front and back surfaces 4, 5 where the passivated film 2 of the base board 1 is removed; a step S4 of obtaining the metal separator P2 by press-forming a passage 6 of a reactant gas on the surface 4 of the blank plate P1; and a step of blazing thin film layers 3, 3 of the back surfaces 5 where a pair of metal separators P2 face each other and are adjacent to each other, via a blazing material such as solder. <P>COPYRIGHT: (C)2009,JPO&INPIT |
