Morphology and phase composition of the scales formed on 316L stainless steel in an environment simulating a solid oxide fuel cell (SOFC) interconnect were determined towards the corrosion behavior study of commercial and new alloys for SOFC stack and balance-of-plant (BOP) applications. The simulated SOFC environment consisted of a dual exposure condition with air on one side of the specimen and mixtures of hydrogen and water vapor on the other side at 907 °K. Surface characterization techniques, such as optical and scanning electron microscopy, energy dispersive X-ray spectroscopy as well as X-ray diffraction analysis were used in this study. Also, an attempt was made to correlate the experimental results with thermodynamic calculations.

Subject
Scanning electron microscopy, Solid oxide fuel cells, Materials, Electrochemical cells, Chromia, Oxide formation, Chromium, Corrosion scales, Oxide scales, Scale formation, Scale, Concentration cells, Anodes
Keywords:
solid oxide fuel cells, stainless steel, air, hydrogen, water vapor, corrosion
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2004
GOV
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