• image 01
    Volume 1, No.1, 2012
  • image 02
    Volume 1, No.2, 2012
  • image 01
    Volume 1, No.3, 2012
  • image 02
    Volume 2, No.1, 2013
  • image 02
    Volume 2, No.2, 2013
  • image 02
    Volume 2, No.S1, 2013
  • image 02
    Volume 2, No.3, 2013
  • image 02
    Volume 2, No.4, 2013
  • image 02
    Volume 3, No.1, 2014
  • image 02
    Volume 3, No.2, 2014
  • Volume 3, No3
    Volume 3, No.3, 2014
  • Volume 3, No4
    Volume 3, No.4, 2014
  • Volume 4, No1
    Volume 4, No.1, 2015
  • Volume 4, No2
    Volume 4, No.2, 2015
  • Volume 4, No3
    Volume 4, No.3, 2015
  • Volume 4, No4
    Volume 4, No.4, 2015
  • Volume 5, No1
    Volume 5, No.1, 2016
  • image 01
  • image 02
  • Login|Register
  • Chem Sci Trans., 2013, 2(1),  pp 163-175  

    DOI:10.7598/cst2013.302

    Research Article

    Inhibition Performance and Adsorption Behavior of Spinacia Oleracea Leaves Extracts on Mild Steel Corrosion in Hydrochloric Acid Medium

  • S.S. SHIVAKUMAR, K.N. MOHANA and D.M. GURUDATT
  • Department of Chemistry, University of Mysore, Mysore - 570006, India
  • Abstract

    Alcoholic extracts of Spinach (SP) leaves was studied as corrosion inhibitor for mild steel in 0.5 M HCl using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The results of the study revealed that SP extracts inhibit mild steel corrosion through adsorption process following Langmuir adsorption isotherm. The protection efficiency increased with increase in inhibitor concentration and decreased with temperature. Polarization measurements indicated that the SP behaves as mixed type of inhibitor. EIS measurements showed that the charge transfer resistance increases with increase in the concentration of SP extracts. Various thermodynamic parameters such as activation energy, activation enthalpy and activation entropy were evaluated. Adsorption thermodynamic parameters were also computed and SEM was used to analyze the surface adsorbed film.

    Keywords

    Mild steel, Spinach leaves extracts, Corrosion, Polarization, Impedance

    This article has been viwed 4132 times

      

    Citations for this article 7

      

    Download Citations