Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-05T04:18:03.906Z Has data issue: false hasContentIssue false
  • English
  • Français

Oxidation and Resulting Mechanical Properties of Ni/8Y2O3-stabilized Zirconia Anode Substrate for Solid-oxide Fuel Cells

Published online by Cambridge University Press:  31 January 2011

George Stathis ,
Dimitrios Simwonis ,
Frank Tietz ,
Antonia Moropoulou  and
Aristides Naoumides
George Stathis
Affiliation:
National Technical University of Athens, Department of Chemical Engineering, Materials Science and Engineering Section, 9, Iroon Polytechniou Str. Zografou 15780 Athens, Greece
Dimitrios Simwonis
Affiliation:
Forschungszentrum Jülich, Institute for Materials and Processes in Energy Systems, IWV1, D-52425 Jülich, Germany
Frank Tietz
Affiliation:
Forschungszentrum Jülich, Institute for Materials and Processes in Energy Systems, IWV1, D-52425 Jülich, Germany
Antonia Moropoulou
Affiliation:
National Technical University of Athens, Department of Chemical Engineering, Materials Science and Engineering Section, 9, Iroon Polytechniou Str. Zografou 15780 Athens, Greece
Aristides Naoumides
Affiliation:
Forschungszentrum Jülich, Institute for Materials and Processes in Energy Systems, IWV1, D-52425 Jülich, Germany
Get access

Extract

Ni/8 mol% Y2O3-stabilized zirconia cermets are used in thin-film electrolyte solid-oxide fuel cells as support substrates. Rapid oxidation of the metallic Ni can cause failure of the substrate and of the whole system. The rate of Ni oxidation in air and in an inert atmosphere containing water vapor was determined as a function of temperature between 500 and 950 °C. A logarithmic rate law describes the oxidation kinetics in air, whereas a linear rate law fits the first branch of the curve of the experimental data in a humidified inert atmosphere. The substrate exhibits no significant mechanical degradation after uniform oxidation under moderate conditions. However, the observed bending of the samples after oxidation in humidified argon, due to the nonuniform oxidation, can cause damage to fuel cell

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 5 , May 2002 , pp. 951 - 958
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Minh, N.Q., J. Am. Ceram. Soc. 76, 563 (1993).Google Scholar
2.Riley, B., J. Power Sources 29, 223 (1990).CrossRefGoogle Scholar
3.Haart, L.G.J. de, Hauber, Th., Mayer, K., and Stimming, U., in Proc. 2nd Eur. SOFC (solid-oxide fuel cell) Forum, Oslo, Norway, 1996, edited by Thorstenson, B. (Eur. SOFC Forum, U. Bossel, Switzerland, 1996), pp. 229–235.Google Scholar
4.Haart, L.G.J. de, Vinke, I.C., Janke, A., Ringel, H., and Tietz, F., in Proc. 7th Int. Symp. Solid Oxide Fuel Cells, edited by Yokokawa, H. and Singhal, S.C. (The Electrochemical Society, Pennington, NJ, 2001), pp. 111–119.Google Scholar
5.Buchkremer, H.P., Diekmann, U., and Stöver, D., in Proc. 2nd Europ. SOFC Forum, Oslo, Norway, 1996, edited by Thorstenson, B. (Europ. SOFC Forum, U. Bossel, Switzerland, 1996), pp. 221–228.Google Scholar
6.Simwonis, D., J. Mater. Proc. Technol. 92–93, 107 (1999).CrossRefGoogle Scholar
7.Simwonis, D., Naoumidis, A., Dias, F.J., Linke, J., and Moropoulou, A., J. Mater. Res. 12, 1508 (1997).Google Scholar
8.Kofstad, P., High Temperature Corrosion (Elsevier Applied Science, London and New York, 1988).Google Scholar
9.Birks, N. and Meier, G.H., Introduction to High Temperature Oxidation of Metals (Edward Arnold, London, 1983).Google Scholar
10.Lambers, E.S., Dykstal, C.N., and Lee, M., Oxidation of Metals. 45, 301 (1996).Google Scholar
11.Moore, W.J. and Lee, J.K., Trans. Faraday Soc. 48, 916 (1952).Google Scholar
12.Graham, M.J. and Coplan, D., J. Electrochem. Soc. 119, 1265 (1972).CrossRefGoogle Scholar
13.Graham, M.J. and Coplan, D., J. Electrochem. Soc. 119, 1205 (1972).Google Scholar
14.van, J.J. den Brock and Meijering, J.L., Acta Metall. 16, 375 (1968).Google Scholar
15.Graham, M.J. and Coplan, D., J. Electrochem. Soc. 119, 879 (1972).Google Scholar
16.Phillips, W.L., J. Electrochem. Soc. 110, 1014 (1963).CrossRefGoogle Scholar
17.Lexen, T., Schiffers, H., and Steinbrech, R.W. (private communication, 1995)Google Scholar
18.Sandrolini, F., Moriconi, G., Veniale, F., and Zappia, G, in Principles and Applications of Pore Structure Characterization, Proc. Int. Symp., edited by Haynes, J.M. and Rossi-Doria, P., (RILEM/CNR, Milan, 1993), pp. 291–297.Google Scholar
19.Moropoulou, A., Cakmak, A.S., in Soil Dymamics and Earthquake Engineering VIII, edited by Cakmak, A.S., Erdik, M., and Durukal, E. (Computational Mechanics Publications, Southampton, Boston, MA, 1997, in press).Google Scholar