Inhibition of aluminum alloy corrosion in 0.5 M nitric acid solution by 4-4-dimethyloxazolidine-2-thione

Ahmed Y. Musa, Abu Bakar Mohamad, Abdul Amir H. Kadhum, Yousef Bashir A Tabal

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The corrosion inhibition of Al-Alloy (Al2024) in 0.5 M nitric acid solution at 30 °C was achieved using 4-4-dimethyloxazolidine-2-thione (DMT) as a corrosion inhibitor. The electrochemical performance of the DMT was studied by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization measurements, and scanning electron microscopic study (SEM). The results indicated that DMT acts as an inhibitor for Al2024 in 0.5 M nitric acid. Polarization curves indicated that DMT was a mixed-type inhibitor. Inhibition efficiencies were observed to be increased with an increase in DMT concentration and attains approximately to 93.4% at 2 mM of DMT in 0.5 M nitric acid. The adsorption of DMT model on Al2024 surface obeyed in accordance with Langmuir adsorption isotherm model. The value of the free energy of adsorption ΔG ads indicated that the adsorption of DMT molecule was a spontaneous process and was typical of physical and chemical adsorption.

Original languageEnglish
Pages (from-to)394-398
Number of pages5
JournalJournal of Materials Engineering and Performance
Volume20
Issue number3
DOIs
Publication statusPublished - Apr 2011

Fingerprint

Thiones
Nitric Acid
Nitric acid
Aluminum alloys
Corrosion
Adsorption
Potentiodynamic polarization
Corrosion inhibitors
Electrochemical impedance spectroscopy
Adsorption isotherms
Free energy
Polarization
Scanning
Molecules
Electrons

Keywords

  • Aluminum
  • Corrosion testing
  • Surface engineering

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Inhibition of aluminum alloy corrosion in 0.5 M nitric acid solution by 4-4-dimethyloxazolidine-2-thione. / Musa, Ahmed Y.; Mohamad, Abu Bakar; Kadhum, Abdul Amir H.; Tabal, Yousef Bashir A.

In: Journal of Materials Engineering and Performance, Vol. 20, No. 3, 04.2011, p. 394-398.

Research output: Contribution to journalArticle

Musa, Ahmed Y. ; Mohamad, Abu Bakar ; Kadhum, Abdul Amir H. ; Tabal, Yousef Bashir A. / Inhibition of aluminum alloy corrosion in 0.5 M nitric acid solution by 4-4-dimethyloxazolidine-2-thione. In: Journal of Materials Engineering and Performance. 2011 ; Vol. 20, No. 3. pp. 394-398.
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