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Ionics

, Volume 25, Issue 2, pp 871–885 | Cite as

Electrochemical and optical studies of two synthesized cobalt complexes as anti-corrosion agent for low-carbon steel in HCl medium

  • Hülya KeleşEmail author
  • Mustafa Keleş
Original Paper
  • 55 Downloads

Abstract

Two novel synthesized Co(II) complexes, named diacetato(1-(2-methoxyphenyl)-N-(2-(phenylthio)phenyl)methanimine)cobalt(II) (CoMPM) and diacetato(2-(phenylthio)phenyl)-1-(2-(trifluoromethyl)phenyl)methanimine)cobalt(II) (CoPFM), have been investigated as an anti-corrosion agent for low-carbon steel in 1.0 M HCl solution. The protection performance of Co(II) complexes was evaluated using electrochemical and optical methods. The inhibition efficiency was investigated as a function of exposure time, inhibitor concentration, and different potentiostatic potentials. CoPFM (99.4%) was found more efficient as a corrosion inhibitor in negative potentiostatic polarization conditions than CoMPM (98.4%). However, CoMPM (99.2%) showed a better protection when it was compared to CoPFM (95.7%) at the end of 120-h immersion.

Keywords

HCl Inhibition Carbon steel Optical methods Electrochemical methods 

Notes

Acknowledgements

Financial support from the Scientific and Technical Research Council of Turkey (TUBITAK) (project no. 113Z497) is gratefully acknowledged.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Faculty of Arts and Science, Department of ChemistryOsmaniye Korkut Ata UniversityOsmaniyeTurkey

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