(S)‑6‑Phenyl‑2,3,5,6‑tetrahydroimidazo[2,1‑b] thiazole hydrochloride as corrosion inhibitor of steel in acidic solution: Gravimetrical, electrochemical, surface morphology and theoretical simulation

Ahmed A. Fadhil, Anees A. Khadom*, Hongfang Liu, Chaoyang Fu, Junlei Wang, Noor A. Fadhil, Hameed B. Mahood

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A study on the corrosion inhibition of N80 steel in 0.5 M HCl acid with (S)‑6‑Phenyl‑2,3,5,6‑tetrahydroimidazo[2,1‑b] thiazole was undertaken by conducting electrochemical, weight loss, surface morphology, and FTIR measurements. The inhibition efficiency was found to exceed 95%. An excellent inhibitor performance was attained when a spontaneous layer was formed and adsorbed chemically on the surface of steel. The adsorption of inhibitor followed Langmuir adsorption isotherm. Meanwhile, the inhibitor was categorized as a mixed – type one. FTIR and surface morphology analysis was conducted to validate the results, whereas quantum chemical calculation was applied for justifying the inhibition process.

Original languageEnglish
Pages (from-to)503-518
Number of pages16
JournalJournal of Molecular Liquids
Volume276
DOIs
Publication statusPublished - 15 Feb 2019

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

  • Acid corrosion
  • EIS
  • Inhibitor
  • Polarization
  • SEM

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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