The results of the classical frequency-by-frequency electrochemical impedance spectroscopy measurement in each working solution are summarized in Fig. . The general appearance of the recorded Nyquist EIS spectra was the same regardless of the composition of the studied electrolytes with two identified time constants. The first time constant of the capacitive nature was observed in the high-medium frequency domain, while the second constant of the inductive nature was in the low-frequency region. The former is typically assigned to the processes occurring in the surface layer of corrosion products, or in the case of solutions containing inhibitors, to the formation of a surface protective layer . The latter constant is usually attributed to the high concentration of ions (either ionized intermediate forms of corrosion products or dissolved inhibitors) in the near-electrode regions . At the same time, this region of the EIS spectrum is often assigned to the non-stationarity of the tested system upon immersion in corrosive media due to relatively long measurement times . The analysis of the obtained Nyquist spectra confirms the improved impedance response of the alloys in inhibitor-containing solutions. The Bode plots of the capacitive response and the impedance modulus also revealed the improved corrosion resistance of examined alloys (Fig. ). The extraction of the electrochemical parameters from the obtained EIS spectra requires their fitting with the appropriate equivalent circuit, adequately describing the corroding system. In the present contribution, we utilize the fitting approach similar to the results provided in our previous publications . Briefly, to exclude ambiguity in the interpretation of the lowfrequency region of the EIS spectrum, which is usually affected by the non-stationarity of the measured system, the inductive region of each spectrum was excluded from the fitting and was not considered in the equivalent circuit. In the ZView software, the frequency interval was limited to the region without inductive response. This also allowed to directly compare the results between the classical EIS and dynamic DEIS measurements.