An oxygen transport membrane assembly having a coating or overlay system is provided. The overlay or coating system is disposed on the one or more surfaces of the metal containing components within the oxygen transport membrane assembly and comprises a plurality of protective layers providing oxidation resistance, chromium diffusion barrier and high emissivity. The disclosed overlay or coating system may include at least one layer of an aluminum oxide or magnesium-aluminum oxide to provide an effective oxidation resistance and/or chromium diffusion barrier. In addition, the overlay or coating system includes a high emissivity layer such as a high porosity ceramic-oxide layer or an aluminum-phosphate layer including a plurality of carbon encapsulated within the aluminum-phosphate matrix.
U.S. GOVERNMENT RIGHTS
 This invention was made with Government support under Cooperative Agreement No. DE-FC26-07NT43088, awarded by the United States Department of Energy. The Government has certain rights in this invention.