Adsorption Properties and Inhibition of C38 Steel Corrosion in Hydrochloric Solution by Some Indole Derivates: Temperature Effect, Activation Energies, and Thermodynamics of Adsorption
Figure 12
Nyquist plots: (□) experimental data and (—) fit data, together with the equivalent circuit used to fit the impedance data, recorded for a C38 electrode (a) in 1 M HCl solution + 0.2 mM harmane at 35°C and (b) in 1 M HCl solution + 0.2 mM norharmane at 55°C.