Corrosion Control of Carbon Steel in Acidic Media by Nonionic Surfactant Compounds Derived from 1,3,4-Oxadiazole and 1,3,4-Thiadiazole

Two nonionic surfactants molecules (NSM) compounds derived from 1,3,4- oxadiazole and 1,3,4- thiadiazol were synthesized and identified by FTIR and 1HNMR. The synthetic molecules were tested as corrosion inhibitor for carbon steel (CSt) in 1.0M HCl solutions utilizing chemical and electrochemical me...

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Bibliographic Details
Published in:International journal of electrochemical science 2022-12, Vol.17 (12), p.221255, Article 221255
Main Authors: Abdallah, M., Al-Habal, Tasnem, El-Sayed, Refat, Awad, M.I., Hameed, R.S. Abdel
Format: Article
Language:English
Subjects:
Adsorption
Carbon steel
Impedance
Inhibitor
Nonionic surfactants
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Summary:Two nonionic surfactants molecules (NSM) compounds derived from 1,3,4- oxadiazole and 1,3,4- thiadiazol were synthesized and identified by FTIR and 1HNMR. The synthetic molecules were tested as corrosion inhibitor for carbon steel (CSt) in 1.0M HCl solutions utilizing chemical and electrochemical methods. Inhibition efficacy(%IE) rises with rising concentration of NSM. It is reached 86.76% and 89.78 % for NSM compounds I and II, respectively, The %IE values minimized at elevated temperature demonstrating the physical adsorption of NSM compounds on the CSt surface. Potentiodynamic polarization proved the NSM are mixed inhibitors. The inhibitory strength of these molecules was interpreted on the fundamental of its adsorption on the CSt surface. The adsorption is subjected to Langmuir isotherm. There is a good agreement between the values of %IE and the surface properties values for the interpretation of the inhibitory activity of NIS compounds
ISSN:1452-3981
1452-3981
DOI:10.20964/2022.12.63