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http://dx.doi.org/10.9713/kcer.2012.50.1.118

Analysis of Corrosion Characteristics for TiN- and Ti/TiN-coated Stainless Steel Bipolar Plate in PEMFC  

Han, Choonsoo (Department of Nano & Chemical Engineering, Kunsan National University)
Chae, Gil-Byung (School of New Material Science, Chonbuk National University)
Lee, Chang-Rae (Materials Processing Division, Korea Institute of Materials Science)
Choi, Dae-Kyu (School of New Material Science, Chonbuk National University)
Shim, Joongpyo (Department of Nano & Chemical Engineering, Kunsan National University)
Publication Information
Korean Chemical Engineering Research / v.50, no.1, 2012 , pp. 118-127 More about this Journal
Abstract
TiN or Ti/TiN was coated on stainless steel as bipolar plate in polymer electrolyte membrane fuel cells (PEMFCs) to improve their corrosion resistance and electric conductivity, and their properties were examined under fuel cell operating condition. After 200 hours operation, the behaviors for the corrosion, crack and dissolution of coating layer were investigated by various techniques. The corrosion and exfoliation of coating layer were considerably generated except for SUS316L-Ti/TiN after fuel cell operation even if the electric conductivity and corrosion resistance of coated stainless steel bipolar plates were improved. The adoption of Ti layer between TiN layer and the surface of stainless steel enhanced the adhesion of TiN layer and decreased the possibility of corrosion by the increase of coating layer.
Keywords
Fuel Cell; Polymer Electrolyte Membrane Fuel Cell; Metal Bipolar Plate; Stainless Steel; TiN Coating;
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Times Cited By KSCI : 2  (Citation Analysis)
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