C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 8/26 (2006.01) B05D 5/12 (2006.01) C21D 1/06 (2006.01) C21D 6/00 (2006.01) C23C 8/24 (2006.01) C23C 16/34 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01) C22C 38/00 (2006.01) C22C 38/38 (2006.01) C22C 38/58 (2006.01)
Patent
CA 2427188
The present invention provides a low-contact- resistance interface structure between a separator and a carbon material for a fuel cell, a carbon material and a separator used in the interface structure, and a production method for a stainless steel separator for a fuel cell. The present invention is a low-contact- resistance interface structure between a separator and a carbon material for a fuel cell, characterized by having a titanium nitride layer 0.1 to 200 µm in thickness between the stainless steel separator and the carbon material contacting therewith. Further, the present invention is a method for producing a stainless steel separator incorporated in the above interface structure for a fuel cell, characterized by forming a titanium nitride layer 0.1 to 200 µm in thickness on one or both surfaces of a stainless steel containing, in mass, C: 0.0005 to 0.03%, Si: 0.01 to 2%, Mn: 0.01 to 2.5%, S: 0.01% or less, P: 0.03% or less, Cr: 13 to 30%, and Ti: 0.05 to 5%, with the balance consisting of Fe and unavoidable impurities, by applying a nitriding treatment to the stainless steel, in an atmosphere gas containing nitrogen, after the stainless steel is formed into a prescribed shape.
Akamatsu Satoshi
Homma Hotaka
Kaneko Michio
Kihira Hiroshi
Senuma Takehide
Goudreau Gage Dubuc
Nippon Steel Corporation
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