Abstract
Suspension plasma spray deposition was utilized to fabricate dense lanthanum strontium cobalt ferrite oxygen separation membranes (OSMs) on porous metal substrates for mechanical support. The as-sprayed membranes had negligible and/or reversible material decomposition. At the longer stand-off distance (80 mm), smooth and dense membranes could be manufactured using a plasma with power below approximately 81 kW. Moreover, a membrane of 55 μm was observed to have very low gas leakage rates desirable for OSM applications. This thickness could potentially be decreased further to improve oxygen diffusion by using metal substrates with finer surface pores.
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Acknowledgments
We would like to acknowledge Natural Sciences and Engineering Research Council of Canada (NSERC) and Hatch Limited for providing funding for this research. We would also like to acknowledge Mr. Tiegang Li for operating the robot for the plasma torch.
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Fan, E.S.C., Kesler, O. Deposition of Lanthanum Strontium Cobalt Ferrite (LSCF) Using Suspension Plasma Spraying for Oxygen Transport Membrane Applications. J Therm Spray Tech 24, 1081–1092 (2015). https://doi.org/10.1007/s11666-015-0269-4
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DOI: https://doi.org/10.1007/s11666-015-0269-4