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Oxide scale formations on FeCr alloy interconnects were investigated in anode gas (mixtures of CH 4 and H 2 O) atmospheres for solid oxide fuel cells. The silicon concentration in FeCr alloy changed the microstructures of oxide scales, elemental distribution and oxide scale growth rates. Oxide scale is composed of the following phases from surface to inner oxides: FeMn spinel, Cr ...
Mass transport phenomenon was investigated for the oxidation of Fe–Cr alloy in CH 4 –H 2 O at 1073 K. Grain boundary diffusion of elements was visualized around the oxide scale/alloy interfaces by secondary ion mass spectrometry (SIMS) imaging analysis. The distributions of elements on the oxide scale and alloy were analyzed in an area of 150 μm in diameter. The SIMS images show high...
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