The performance of the FGO-and GO-CMMC coating in the corrosion protection was evaluated electrochemically through potentiostatic and potentiodynamic measurements under a 3.5% NaCl environment. The corrosion resistance of the samples was estimated in an electrochemical cell consisting of a silver/silver chloride (Ag/AgCl, KCl 3M) electrode and a platinum sheet as reference and counter electrodes, respectively. The examined samples were sealed on the base of the cell to make corrosion possible only on the coated side (an active area of 1 cm 2 ). The corrosion measurements were performed on each sample, first by recording the open circuit potential (OCP) during a stabilization period of 1h, followed by potentiodynamic polarization measurements at a scan rate of 0.3 mV/s within a scan range of ±250 mV vs. OCP.