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Phenylcoumarin Glucoside as a Natural Inhibitor in the Protection of Low Carbon Steel Against Corrosion

Published online by Cambridge University Press:  26 December 2017

Héctor M. Barbosa Cásarez ,
Araceli Espinoza Vázquez  and
Francisco J. Rodríguez-Gomez
Héctor M. Barbosa Cásarez
Affiliation:
Facultad de Química, Edificio D, Circuito de la Investigación Científica S/N CP 04510 Ciudad de México
Araceli Espinoza Vázquez*
Affiliation:
Facultad de Química, Edificio D, Circuito de la Investigación Científica S/N CP 04510 Ciudad de México
Francisco J. Rodríguez-Gomez
Affiliation:
Facultad de Química, Edificio D, Circuito de la Investigación Científica S/N CP 04510 Ciudad de México
*
*Corresponding author: [email protected]
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Abstract

Phenylcoumarin glucoside (4-PC) is a compound extracted from the plant Hintona latiflora and was studied as inhibitor for AISI 1018 steel corrosion in 3% NaCl solution using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques, which may find application as eco-friendly corrosion inhibitors. The 4-PC provides inhibitor properties that protect AISI 1018 low carbon steel against corrosion at low concentrations (5 ppm) obtained by EIS. Polarization studies showed that the inhibitor was of mixed type. The inhibition efficiency by the two electrochemical techniques shows similar results. The inhibitor adsorption was demonstrated to be a combined process (physisorption and chemisorption) according to the Langmuir isotherm.

Keywords

corrosionelectrochemical synthesissteel
Type
Articles
Information
MRS Advances , Volume 2 , Issue 62: International Materials Research Congress XXVI , 2017 , pp. 3909 - 3915
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Copyright
Copyright © Materials Research Society 2017 

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