Dense La0.6Sr0.4Fe0.8Co0.2O3-delta (LSFC) membranes were successfully prepared on NiCoCrAlY metal supports by low pressure plasma spraying-physical vapour deposition. He leakage rate tests and microstructural analysis by SEM of the as-deposited films showed that a gas-tight membrane layer is achieved. Membrane thicknesses are between 40 and 65 mu m. The oxygen permeation flux was determined at atmospheric pressure in an air-Ar gradient at different temperatures between 700 and 950 degrees C and compared with 1 mm thick LSFC pellet. Although leakage was detected, noteworthy oxygen permeation rate of the supported membranes (similar to 0.3 ml cm(-2) min(-1) at 885 degrees C) is reported. (C) 2013 Elsevier B.V. All rights reserved.