Corrosion Inhibition Effect of 4-Hydroxy-N′-[(E)-(1H-indole-2-ylmethylidene)] Benzohydrazide on Mild Steel in Hydrochloric Acid Solution

Figure 6

Equivalent circuit used to fit the experimental EIS data (a). EIS data obtained for the corrosion inhibition of mild steel in 1 M HCl containing 0.8 mM HIBH at 40°C (b).

(a)

(b)