Journal of Materials Science

, Volume 48, Issue 17, pp 5880–5898 | Cite as

Microstructural evolution in two alkali multicomponent silicate glasses as a result of long-term exposure to solid oxide fuel cell environments

  • Amit Shyam
  • Rosa Trejo
  • Dana McClurg
  • Alexander Ladouceur
  • Melanie Kirkham
  • Xueyan Song
  • Jane Howe
  • Edgar Lara-Curzio
Article
First Online:
Received:
Accepted:

Abstract

The microstructural evolution in two potential solid oxide fuel cell (SOFC) sealing glass materials exposed to air and a gas mixture of steam + H2 + N2 at 800 °C up to 10000 h was determined. The glass exposures were performed on common SOFC substrates like alumina and zirconia. Characterization of the crystalline phases and pore size distribution was performed for the specimens with various exposure conditions. Comparison of the microstructural and chemical stability of the two glasses was performed based on known trends related to glass chemistry. It was observed that multicomponent glasses followed few rules for chemical and microstructural stability reported in the literature for glasses with fewer components. The two glasses examined in this study displayed adequate resistance to devitrification but marginal resistance to porosity changes in the SOFC environment exposure. The implications of the results for the design and long-term performance of SOFC seals are discussed.

Keywords

Steam Solid Oxide Fuel Cell Reaction Layer Alumina Substrate Longe Exposure Time 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgements

This research work was sponsored by the US Department of Energy, Office of Fossil Energy, SECA Core Technology Program at ORNL. The authors are grateful for the support of NETL program managers Rin Burke, Wayne Surdoval, Travis Shultz and Shailesh Vora. The authors thank James Hemrick (ORNL) for reviewing the manuscript.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Amit Shyam
    • 1
  • Rosa Trejo
    • 1
  • Dana McClurg
    • 1
  • Alexander Ladouceur
    • 1
  • Melanie Kirkham
    • 1
  • Xueyan Song
    • 2
  • Jane Howe
    • 1
  • Edgar Lara-Curzio
    • 1
  1. 1.Materials Science and Technology DivisionOak Ridge National LaboratoryOak RidgeUSA
  2. 2.Mechanical and Aerospace EngineeringWest Virginia UniversityMorgantownUSA

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