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http://dx.doi.org/10.5695/JKISE.2011.44.5.173

Surface Properties of Chromium Nitrided Carbon Steel as Separator for PEMFC  

Choi, Chang-Yong (Korea Institute of Industrial Technology)
Kang, Nam-Hyun (Department of Materials Science and Engineering, Pusan National University)
Nam, Dae-Geun (Korea Institute of Industrial Technology)
Publication Information
Journal of the Korean institute of surface engineering / v.44, no.5, 2011 , pp. 173-178 More about this Journal
Abstract
Separator of stack in polymer electrolyte membrane fuel cell (PEMFC) is high cost and heavy. If we make it low cost and lighter, it will have a great ripple. In this study, low carbon steel is used as base metal of separator because the cost of low carbon steel is very cheaper commercial metal material than stainless steels, which is widely used as separator. Low carbon steel has not a good corrosion resistance. In order to improve the corrosion resistance and electrolytic conductivity, low carbon steel needs to be surface treated. We made Chromium electroplated layer of $5{\mu}m$, $10{\mu}m$ thickness on the surface of low carbon steel and it was nitrided for 2 hours at $1000^{\circ}C$ in a furnace with 100 torr nitrogen gas pressure. Cross-sectional and surface microstructures of surface treated low carbon steel are investigated using SEM. And crystal structures are investigated by XRD. Interfacial contact resistance and corrosion tests were considered to simulate the internal operating conditions of PEMFC stack. The corrosion test was performed in 0.1 N $H_2SO_4$ + 2 ppm $F^-$ solution at $80^{\circ}C$. Throughout this research, we try to know that low carbon steel can be replaced stainless steel in separator of PEMFC.
Keywords
PEMFC; Nitriding; Carbon steel; Separator; Cr plating;
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1 D. G. Nam, H. C. Lee, J. Power Sources, 170 (2007) 268.   DOI
2 H. Tawfik, Y. Hung, D. Mahajan, J. Power Sources, 163 (2007) 755.   DOI
3 H. Wang, M. A. Sweikar, J. A. Turner, J. Power Sources, 115 (2003) 243.   DOI
4 D. P. Davies, P. L. Adcock, M. Turpin, S. J. Rowen, J. Appl. Electrochem., 30 (2000) 101.   DOI
5 Surface Treatment, Ministry of Employment and Labor, Human Resources Development Service of Korea
6 I. Masaru, J. Forean, Soc. Heat Treat., 14 (2001) 179.
7 H. Wang, M. P. Brady, G. Teeter, J. A. Tumer, J. Power Sources, 138 (2004) 86.   DOI   ScienceOn
8 H. Y. Lee, S. H. Lee, J. H. Kim, M. C. Kim, D. M. Wee, J. Kor. Inst. Met. Mater., 45 (2007) 602.
9 EGG Services, Fuel Cell Handbook, U.S. Department of Energy, Morgatown, 5 (2000) 1.
10 A. Boudghene Stambouli, E. Traversa, Renewable and Sustainable Energy Reviews, 6 (2002) 297.
11 K. Joon, J. Power Sources, 71 (1998) 12.   DOI   ScienceOn
12 H. Tsuchiya, O. Kobayashi, Int. J. Hydrogen Energy, 29 (2004) 985.   DOI
13 X. Li, I. Sabir, Int. J. Hydrogen Energy, 30 (2004) 359.
14 I. Bar-On, R. Kirchain, R. Roth, J. Power Sources, 109 (2002) 71.   DOI
15 V. Mehta, J. S. Cooper, J. Power Sources, 114 (2003) 32.   DOI
16 A. Hermann, T. Chaudhuri, P. Spagnol, Int. J. Hydrogen Energy, 30 (2005) 1297.   DOI
17 P. L. Hentall, J. B. Lakeman, G. O. Mepsted, P. L. Adcock, J. M. Moore, J. Power Sources, 80 (1999) 235.   DOI