INSTITUTO DE INVESTIGACIONES EN MICROBIOLOGIA Y PARASITOLOGIA MEDICA
Unidad Ejecutora - UE
Corrosion inhibition of mild steel in HCL solution by pectin
M. VICTORIA FIORI BIMBI; PATRICIA ALVAREZ; HUGO R. VACA; CLAUDIO GERVASI
PERGAMON-ELSEVIER SCIENCE LTD
Lugar: Amsterdam; Año: 2015 vol. 92 p. 192 - 192
This work describes the successful performance of pectin as an eco-friendly corrosion inhibitor for mild steel in HCl solution. The inhibition mechanism is discussed considering thermodynamics of adsorption and kinetics of the electrochemical reactions. Inhibition efficiency increases with temperature while the activation energy for the corrosion rate decreases with the addition of pectin. Pectin is a mixed-type inhibitor and the mode of inhibition results from the geometric blocking effect of chemisorbed inhibitive species at the metal surface. Spectroscopic analysis points to the formation of a complex between pectin and Fe2+ ions released during the corrosion reaction.