Optimizing structural and compositional properties of electrodeposited ceria coatings for enhanced oxidation resistance of a nickel-based superalloy

► Modulation of composition, microstructure and thickness of electrodeposited ceria coatings. ► Role of current density on the appearance of cracks and oxygen vacancies highlighted. ► Linear mass gain with a high synthesis yield and no spallation was demonstrated. ► Formation of alpha-alumina from the γ′ phase of the substrate during annealing. ► Different crystallization microstructures depending on the temperature.