Inhibition of mild steel corrosion in hydrochloric acid solution by new coumarin

Abdul Amir H. Kadhum, Abu Bakar Mohamad, Leiqaa A. Hammed, Ahmed A. Al-Amiery, Ng Hooi San, Ahmed Y. Musa

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

A new coumarin derivative, N, N′-((2E,2′E)-2,2′-(1,4-phenylenebis (methanylylidene))bis(hydrazinecarbonothioyl))bis(2-oxo-2H-chromene-3-carboxamide) PMBH, was synthesized and its chemical structure was elucidated and confirmed using spectroscopic techniques (Infrared spectroscopy IR, Proton nuclear magnetic resonance, 1H-NMR and carbon-13 nuclear magnetic resonance 13C-NMR). The corrosion inhibition effect of PMBH on mild steel in 1.0 M HCl was investigated using corrosion potential (ECORR), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM) measurements. The obtained results indicated that PMBH has promising inhibitive effects on the corrosion of mild steel in 1.0 M HCl across all of the conditions examined. Scanning electron microscopy (SEM) was used to investigate the morphology of the mild steel before and after immersion in 1.0 M HCl solution containing 0.5 mM of PMBH. Surface analysis revealed improvement of corrosion resistance in presence of PMBH.

Original languageEnglish
Pages (from-to)4335-4348
Number of pages14
JournalMaterials
Volume7
Issue number6
DOIs
Publication statusPublished - 2014

Fingerprint

Steel corrosion
Hydrochloric Acid
Hydrochloric acid
Carbon steel
Nuclear magnetic resonance
Corrosion
Coumarins
Potentiodynamic polarization
Surface analysis
Frequency modulation
Electrochemical impedance spectroscopy
Corrosion resistance
Infrared spectroscopy
Carbon
coumarin
Derivatives
Scanning electron microscopy

Keywords

  • Corrosion inhibitor
  • Coumarin
  • Potentiodynamic
  • Terephthalaldehyde

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Inhibition of mild steel corrosion in hydrochloric acid solution by new coumarin. / Kadhum, Abdul Amir H.; Mohamad, Abu Bakar; Hammed, Leiqaa A.; Al-Amiery, Ahmed A.; San, Ng Hooi; Musa, Ahmed Y.

In: Materials, Vol. 7, No. 6, 2014, p. 4335-4348.

Research output: Contribution to journalArticle

Kadhum, Abdul Amir H. ; Mohamad, Abu Bakar ; Hammed, Leiqaa A. ; Al-Amiery, Ahmed A. ; San, Ng Hooi ; Musa, Ahmed Y. / Inhibition of mild steel corrosion in hydrochloric acid solution by new coumarin. In: Materials. 2014 ; Vol. 7, No. 6. pp. 4335-4348.
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AU - San, Ng Hooi

AU - Musa, Ahmed Y.

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