C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 28/04 (2006.01) B05D 7/14 (2006.01) C22C 38/00 (2006.01) C23F 15/00 (2006.01)
Patent
CA 2386462
The invention relates to an improved composite used as a bipolar separator plate in fuel cells. The composite of the invention comprises a steel substrate having a carbon coating thereon, the carbon coating comprises a carbon layer derived by pyrolysis of an acetylenic polymer having a content of carbon of at least 90 %, the carbon layer protects the substrate against corrosion and improves long term contact resistivity, the polymer is soluble at a temperature below 110 °C in an organic solvent, and the carbon layer contacts said steel substrate. A process for preparing the composite according to the invention is also disclosed.
Cunningham Nicolas
Dodelet Jean-Pol
Hay Allan S.
Meng Yuezhong
Institut National de La Recherche Scientifique
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Universite Mcgill
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