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Tertiary Arsines as Corrosion Inhibitors for Zinc in acid solution

✍ Scribed by H. B. Rudresh; S. M. Mayanna

Publisher
John Wiley and Sons
Year
1980
Tongue
German
Weight
480 KB
Volume
31
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

Tertiary 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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