摘要: Oxygen transport and oxygen surface reaction measurements have been obtained for La0.6Sr0.4Co0.2Fe0.8O3−δ using the conductivity relaxation technique. These are compared with tracer diffusion coefficients exchange same material. The change in stoichiometry of this material temperature partial pressure has demonstrated. values derived from these experiments used to calculate theoretical fluxes close agreement found actual permeation through a dense sample modified Wagner model.