Compounds from the imidazole group as copper corrosion inhibitor in acidic sodium sulphate solution

Authors

  • Ana Simonović University of Belgrade, Technical Faculty, Bor, Serbia Author
  • Milan Radovanović University of Belgrade, Technical Faculty, Bor, Serbia Author
  • Mihajlović Marija Petrović University of Belgrade, Technical Faculty, Bor, Serbia Author
  • Milan Antonijević University of Belgrade, Technical Faculty, Bor, Serbia Author

DOI:

https://doi.org/10.5937/ZasMat1701055S

Keywords:

copper, 2-mercapto-1-methylimidazole and 4(5)methil-imidazole, corrosion inhibition, anodic dissolution, polarization

Abstract

To estimate influence of 2-mercapto-1-methylimidazole and 4(5)methil-imidazole on electrochemical behaviour of copper electrode in 0.5 moldm-3 Na2SO4 solution, pH 3, following methods were used: open circuit potential measurements, potentiodynamic polarization, chronoamperometry. Potentiodynamic measurements showed that investigated inhibitors can be used as copper corrosion inhibitor in acidic 0.5 moldm-3Na2SO4 solution. Increase of concentrations leads to better inhibitor efficiency. These results were confirmed using the chronoamperometry. Adsorption of 2-mercapto-1-methylimidazole and 4(5)methil-imidazole obeys Langmuir adsorption isotherm.

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Published

15-03-2017

Issue

Vol. 58 No. 1 (2017)

Section

Articles