Method for producing a fuel cell separator
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United States of America Patent
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Feb 4, 2003
Issued Date -
N/A
app pub date -
Nov 8, 2000
filing date -
May 8, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for producing a separator in which a recessed gas path is formed. Depth fluctuations of the gas path can be reduced. The gas path having plural depths or gradation can be formed easily. An electrically conductive member 3, as a separator, and a processing electrode 16, having patterned electrode projections 20, are immersed in an electrolytic solution facing each other. Current is fed between member 3 and electrode 16 for electrolytic processing to dissolve the portion of the member 3 facing projections 20, thus forming a gas path 30 having a surface roughness Rz on this bottom surface 30e not larger than 1 .mu.m.
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