Tubular Asymmetric La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ Oxygen Transport Membranes Prepared by Plasma Spraying-Physical Vapor Deposition (PS-PVD) and Supersonic Air-Gas Plasma Spraying (SAPS)

Tubular asymmetric LSCF oxygen transport membranes (OTMs) were prepared on stainless steel substrates by PS-PVD and supersonic air-gas plasma spraying (SAPS). The microstructure of the thermally sprayed OTMs is examined by cross-sectional imaging and oxygen permeability is assessed via oxygen permeation flux measurements carried out at atmospheric pressure in an air-helium gradient. The findings from the cross-sectional analysis and oxygen permeation tests are reported and discussed.