Abstract
AbstractTertiary arsines such as diphenylethyl arsine (DPEA), diphenylmethyl arsine (DPMA) and triphenyl arsine (TPA) have been used as corrosion inhibitors for zinc in perchloric acid solution. These inhibitors inhibit corrosion effectively even in traces. The percentage inhibitor efficiency of the inhibitors are in the order DPEA > DPMA > TPA. The effect of pH and temperature on the inhibitor efficiency is studied. Steady state anodic and cathodic polarization data reveal that tertiary arsines act as interfacial corrosion inhibitors for zinc in acidic solution. The apparent free energies of adsorption of inhibitors have been reported for different possible modes of adsorption.
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