Mitigation of corrosion of carbon steel in acid medium using some antipyrine derivatives

Authors

  • Salam Abd Samar A. El El-Mansoura University, Department of Chemistry, Faculty of Science, El-Mansoura, Egypt Author
  • Maksoud Abd Samar A. El Port Said University, Department of Chemistry, Faculty of Science, Port Said, Egypt Author

DOI:

https://doi.org/10.5937/ZasMat1701005F

Keywords:

corrosion inhibition, carbon steel, HCl, antipyrine derivatives

Abstract

Adsorption and inhibition efficiency of some antipyrine derivatives on the C-steel (CS) in 1M HCl were estimated using three electrochemical techniques (electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM) and potentiodynamic polarization). Results of polarization showed that these derivatives act as mixed type inhibitors. These derivatives were adsorbed on CS surface following Langmuir adsorption model. EIS results showed that, there was a decrease in double layer capacitance (Cdl) and an increase in charge transfer resistance (Rct). Three different techniques gave concordant results.

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Published

15-03-2017

Issue

Vol. 58 No. 1 (2017)

Section

Articles