24. Chemical Reaction Behavior Between Glass-Ceramic Sealants and High Chromium Ferritic Steels Under Various SOFC Conditions

  1. Narottam P. Bansal
  1. S. M. Gross,
  2. T. Koppitz and
  3. N. H. Menzler

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291245.ch24

Advances in Solid Oxide Fuel Cells: Ceramic Engineering and Science Proceedings, Volume 26, Number 4

Advances in Solid Oxide Fuel Cells: Ceramic Engineering and Science Proceedings, Volume 26, Number 4

How to Cite

Gross, S. M., Koppitz, T. and Menzler, N. H. (2008) Chemical Reaction Behavior Between Glass-Ceramic Sealants and High Chromium Ferritic Steels Under Various SOFC Conditions, in Advances in Solid Oxide Fuel Cells: Ceramic Engineering and Science Proceedings, Volume 26, Number 4 (ed N. P. Bansal), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291245.ch24

Author Information

  1. Forschungszentrum Jülich, Germany

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982343

Online ISBN: 9780470291245

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Keywords:

  • CaO-SiO2;
  • crofer22apu;
  • inductively coupled plasmasptical emission spectroscopy;
  • cambridge stereosan 360;
  • chromium oxide

Summary

The interaction behavior between glass-ceramic sealants and a metallic SOFC interconnect material under conditions simulating SOFC stacks has been investigated. The experiments were carried out at different time scales from 100 h up to long term tests over a period of 2500 h. The investigated glass compositions were based on the system of BaO-CaO-SiO2. The steel used in this study is a high chromium ferritic steel especially developed for high temperature applications. Apart from small steel samples, which were coated on one side with a glass-ceramic and exposed to a simulated SOFC anode gas atmosphere (Ar - 4% H2 - 2% H2O) at 800 °C, tests were also made with sandwiched samples consisting of two steel coupons joined with a glass-ceramic. These were subjected to realistic SOFC conditions. The sandwiched samples were flushed with H2 - 3% H2O on the inside, and air to the outside. The compatibility between steel and glass depended on the glass composition at first sight, but a variety of interaction phenomena were observed after an extended exposition time.