The X-ray photoelectron spectroscopy (XPS) measurements were performed directly after exposure of the examined alloys to the 0.05 M NaCl containing 150 mM of the molybdate inhibitor for 1 h. A ThermoFisher Scientific Escalab 250Xi spectrometer, equipped with an Al Kα X-Ray source (spot size 250 μm), operating at a pass energy of 10 eV, was used. Before measurements, samples were thoroughly rinsed with deionized water, air dried, and transferred to a vacuum chamber within 10 min to avoid oxidation. The binding energy values were charge-corrected to the carbon C 1s excitation (284.6 eV).