Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1285404 | Journal of Power Sources | 2008 | 6 Pages |
Abstract
The oxidation properties of potential SOFCs materials Crofer 22 APU, Ebrite and Haynes 230 exposed in coal syngas at 800 °C for 100 h were studied. The phases and surface morphology of the oxide scales were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray analysis (EDX). The mechanical endurance and electrical resistance of the conducting oxides were characterized by indentation and electrical impedance, respectively. It was found that the syngas exposure caused the alloys to form porous oxide scales, which increased the electrical resistant and decreased the mechanical stability. As for short-term exposure in syngas, neither carbide nor metal dusting was found in the scales of all samples.
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Authors
Kejia Liu, Junhang Luo, Chris Johnson, Xingbo Liu, J. Yang, Scott X. Mao,