Abstract
Solid Oxide membranes (SOMs) have been applied to metal production through oxide reduction in order to accomplish low-cost production of primary products through simple pre-processing, low capital costs, small manufacturing plants, and low energy costs. Especially, the SOM process is eco-friendly, which makes it even more attractive. The SOM process is a direct electrolytic reduction process using a solid-oxide oxygen ion conducting membrane with high-temperature molten salts as a reaction medium. The transported oxygen ions from the cathode during the direct electroreduction process create a chemically harsh environment that can be corrosive for the alloy. Therefore, there is a need for the high-temperature corrosion behavior of alloy in high-temperature oxygen atmosphere. In this study, the hot corrosion behavior of FeCrAl alloy was investigated at 1150 ℃ in oxygen atmosphere with alumina shielding and without alumina shielding. The surface and cross-sectional morphologies and the characteristics of alloy were analyzed by SEM, EDS. As a result, FeCrAl alloy with alumina shielding was less oxidation than that without alumina shielding.
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