Study of Synergistic Effect of Iodide on the Corrosion Antagonistic Behaviour of a Heterocyclic Phenylhydrazone in Sulphuric Acid Medium on Carbon Steel

Figure 10

(a) SEM image of bare CS surface (b) SEM image of CS surface in 0.5 M H₂SO₄, (c) SEM image of CS surface in 0.5 M H₂SO₄ and 3APPH (0.8 mM), and (d) SEM image of CS surface in 0.5 M H₂SO₄ and 3APPH (0.8 mM) + 0.2 mM KI.

(a)

(b)

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(d)