Corrosion inhibition of zinc in hydrochloric acid by a new condensation product

Ganesha Achary; Y. Arthoba Nayaka

Volume : VII, Issue : XII, December - 2018

Corrosion inhibition of zinc in hydrochloric acid by a new condensation product

Ganesha Achary, Y. Arthoba Nayaka

Abstract :

The corrosion of zinc in hydrochloric acid containing a new condensation product has been studied at different acid concentrations, inhibitor concentration and temperatures. The inhibition efficiency of condensation product increases with concentration of inhibitor and decreases with the increase in concentration of acid. As temperature increases, corrosion rate increases while percentage of inhibition efficiency decreases. The mass loss and electrochemical investigations suggest that the inhibitor cover both the anodic and cathodic regions through adsorption to form a protective film. The electrochemical studies of zinc specimens are performed in aqueous acid solution using galvenostatic polarization technique and electrochemical impedance spectroscopy. The inhibition efficiency increased with increase in inhibitor concentration and decreased with increase in temperature and concentration of acid medium.