Inhibition Effect of Tetraethanol-b-Octadecenyl Succinylamide in Acidic Corrosion of Carbonized Steel

Authors

  • Florida L. Halilova Azerbaijan State Research Institute of Olefins, 370025 Baku, Azerbaijan
  • Ramiz M. Aligulyev Azerbaijan State Research Institute of Olefins, 370025 Baku, Azerbaijan

DOI:

https://doi.org/10.18321/ectj372

Abstract

The influence of tetraethanol-b-octadecenyl succinylamide (TOSA) on the corrosion of steel in H2S04 and HC1 solutions of divers concentrations has been studied using gravimetrical, electrochemical and polarization corrosion test methods. It has been observed that the TOSA behaves as an inhibitor of molecular active cathodic type and has inhibition effect at the beginning stage of corrosion in both acids, but more effectively in H2S04. It is shown that the inhibition effect of the TOSA increases with temperature increasing from 91 % at 20 °C to 100% at 80 °C in 0.5 N H2S04 solution and decreases with temperature increasing for higher concentrations of acid solutions. From obtained electrocapillary curves it is evidenced that the TOSA is a primarily additive of molecular type (insignificant shift of the maximum to the positive side on the curves). Moreover, it is surface active compound those superficial strength substantially decreases in H2S04 (30 dyn/cm) and HCl (34.9 dyn/cm) solutions. It has been shown that the TOSA has a high protection effect and high formation rate of adsorption layer on the metal surface in H2S04 (y = 96.4 % and t = 8.0 min) and HC1 (y = 91.5 % and t = 4.0 min).

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Published

2000-06-12

How to Cite

Halilova, F. L., & Aligulyev, R. M. (2000). Inhibition Effect of Tetraethanol-b-Octadecenyl Succinylamide in Acidic Corrosion of Carbonized Steel. Eurasian Chemico-Technological Journal, 2(2), 149–156. https://doi.org/10.18321/ectj372

Issue

Vol. 2 No. 2 (2000)

Section

Articles

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