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

Figure 10

SEM images of the mild steel specimen after immersion in 1.0 M HCl (a) in the absence and (b) in the presence of HIBH.

(a)

(b)