| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems where because the raw material powder filling condition changes due to the convexo and concave of a die for compressing a raw material powder such as a gas passage and thus the compression ratio changes, while the compression ratio is high at the center part of the separator with the gas passage and the density of the manufactured separator thickens, the compression ratio is low at the periphery of the separator without the gas passage and the density of the manufactured separator thins out to cause the degradations in performance as a separator such as the lowering of strength, the increase in electrical resistance, the increase in gas permeability, etc. <P>SOLUTION: In a die for manufacturing a fuel cell separator, the die is provided with a convex part so as to form grooves 1 at the outer periphery 5 of the fuel cell separator, and the fuel cell separator is made by using the die. <P>COPYRIGHT: (C)2007,JPO&INPIT |
