Oxidation characterization of FeAl coated 316 stainless steel interconnects by high-energy micro-arc alloying technique for SOFC

► The oxidation properties of Fe-Cr-Dy alloys were studied using Electrochemical impedance spectroscopy techniques. ► Proper models were built and the spectra were interpreted in terms of a two-layer model of the films. ► Small additions of element Dy may significantly improve the oxidation resistance. ► With increasing content of Dy the protection of the oxide films slightly decreased.