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Corrosion inhibitory effect of ethylamine on zinc in HCl solution

Author Affiliations

  • 1Chemistry Department, Navyug Science College, Surat, India
  • 2Chemistry Department, Navyug Science College, Surat, India
  • 3Department of Chemistry, Naranlala College of Professional and Applied Sciences, Navsari, India

Res. J. Recent Sci., Volume 8, Issue (4), Pages 40-46, October,2 (2019)

Abstract

Corrosion inhibitory action of ethylamine on zinc in HCl acid solution was studied by mass loss, temperature effect and polarization methods. With increase in acid concentrations corrosion rate increases while inhibition efficiency (I.E.) of inhibitor decreases. With increase in temperature corrosion rate increases while I.E. decreases. Inhibition efficiency of ethylamine increases with increase in inhibitor concentrations. Maximum I.E. was found 98.35 % at 20 mM ethylamine in 0.01M HCl. The inhibition effect is discussed in view of ethylamine molecules adsorbed on the metal surface. Polarization study shows that ethylamine behaves as cathodic type inhibitor.

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