Chapter 25. Surface Modification of Alloys for Improved Oxidation Resistance in SOFC Applications

  1. Narottam P. Bansal,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. David E. Alman1,
  2. Paul D. Jablonski1 and
  3. Steven C. Kung2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291337.ch25

Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4

Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4

How to Cite

Alman, D. E., Jablonski, P. D. and Kung, S. C. (2006) Surface Modification of Alloys for Improved Oxidation Resistance in SOFC Applications, in Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4 (eds N. P. Bansal, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291337.ch25

Author Information

  1. 1

    U. S. Department of Energy 1450 Queen Ave. SW Albany, OR, 97321

  2. 2

    SOFCo-EFS 1562 Beeson Street Alliance, OH 44601

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080542

Online ISBN: 9780470291337

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Keywords:

  • chromium;
  • aluminum;
  • semiconductor;
  • diameter;
  • spectroscopy

Summary

This research is aimed at improving the oxidation behavior of metallic alloys for SOFC application, by the incorporation of rare earths through surface treatments. This paper details the effect of such surface modification on the behavior of Crofer 22 APU, a ferritic steel designed specifically for SOFC application, and Type 430 stainless steel. Two pack cementation like treatments were used to incorporate Ce into the surface of the alloys. After 4000 hours of exposure at 800°C to air+3%H2O, the weight gain of Crofer 22APU samples that were Ce surface modified were less than half that of an unmodified sample, revealing the effectiveness of the treatments on enhancing oxidation resistance. For Type-430, the treatment prevented scale spalling that occurred during oxidation of the unmodified alloy.