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March 7, 2026Hybrid AdvancesOpen Access

Synthesis and Characterization of Two Pyridazine N-Aryl Derivatives as Corrosion Inhibitors for Carbon Steel in 1 M HCl: Electrochemical, Surface Characterization and Theoretical Studies.

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Authors

HAHamza AssilaMRMalak RehiouiHHhamza El Hadki

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Overview

The study demonstrates the corrosion inhibition of carbon steel by pyridazine derivatives, indicating their significant protective potential.

Key Points

  • This research aims to evaluate the efficiency of pyridazine N-aryl derivatives as corrosion inhibitors for carbon steel in acidic conditions.
  • Synthesis of pyridazine N-aryl acetamide derivatives PDZ-PS2 and PDZ-PS3.
  • Characterization using NMR, IR, and mass spectrometry.
  • Electrochemical tests including EIS and PDP in 1 M HCl solution.
  • Surface characterization using SEM and EDS analyses.
  • Theoretical studies via Monte Carlo simulations for adsorption analysis.
  • PDZ-PS2 and PDZ-PS3 achieved inhibition efficiencies of 92.01% and 90.08%, respectively.
  • Charge transfer resistance significantly increased to 458.90 Ω·cm² for PDZ-PS2 and 394.30 Ω·cm² for PDZ-PS3.
  • Corrosion current density decreased from 454.92 μA·cm² (blank) to 36.62 μA·cm² and 45.13 μA·cm² for PDZ-PS2 and PDZ-PS3.
  • Adsorption followed Langmuir isotherm, with high constants of 2.97 × 10⁵ M⁻¹ and 1.86 × 10⁵ M⁻¹.
  • Monte Carlo simulations revealed strong adsorption on Fe(110) with binding energies exceeding 530 kJ/mol.

Cite This Study

Assila et al. (2026) studied this question.

synapsesocial.com/papers/69abc1015af8044f7a4e9ac5https://doi.org/10.1016/j.hybadv.2026.100638
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