7th IMRMPT

Abstract

Abstract information

English title:	Evaluation of Nopal on corrosion phenomena in structural steels by electrochemical evaluations.
Spanish title:	Evaluaci�n del Nopal en fen�menos de Corrosion en aceros estructurales mediante pruebas electroqu�micas
English abstract:	Inhibitors as corrosion mechanisms have allowed to increase the integrity and durability of structural elements. When applied, they generate a slowing down of the corrosion rate. However, it is required the constitution of materials that support and contribute to the reduction of raw materials, including steel, due to the increase generated by the globalization and development of the demand of societies. This is why the present research evaluated Nopal (opuntia ficus indica) as a natural corrosion inhibitor. The particulate material was added in different concentrations (0.0%, 0.1%, 0.5%, 1.0% and 2.0%) by weight in aqueous solution, attacking commercial samples of AISI 1020 steel, then electrochemical measurements of linear polarization resistance (LPR), Tafel polarization curves and half-cell potential were carried out. The results showed that Nopal in concentrations of 1% and 2% reduces the amount of mass, along with the intensity and speed of corrosion up to 30% and 40% respectively, so that the nopal has a remarkable inhibitory power of corrosion, which allows improving the durability in structural steels.
Spanish abstract:	Los inhibidores como mecanismos de corrosi�n han permitido aumentar la integridad y durabilidad de elementos estructurales. Al aplicarla generan una ralentizaci�n de la velocidad de corrosi�n. No obstante, se requiere de la constituci�n de materiales que soporten y coadyuven la reducci�n de materias primas, entre ellas el acero, debido al aumento generado por la globalizaci�n y desarrollo de la demanda de las sociedades. Es por esto que la presente investigaci�n evalu� el Nopal (opuntia ficus indica) como un inhibidor natural de la corrosi�n. Para ello, este fue procesado y secado en un horno a 40�C durante 24 horas, posteriormente macerado y pulverizado a tama�os inferiores a 0,3 mm; El material particulado se a�adi� en diferentes concentraciones (0,0%, 0,1%, 0,5%, 1,0% y 2,0%) por peso en soluci�n acuosa, atacando muestras comerciales de acero AISI 1020, luego se realizaron mediciones electroqu�micas de resistencia de polarizaci�n lineal (LPR), curvas de polarizaci�n de Tafel y potencial de media celda. Los resultados mostraron que el Nopal en concentraciones de 1% y 2% reduce la cantidad de masa, junto con la intensidad y velocidad de corrosi�n hasta en 30% y 40% respectivamente, por lo que el nopal tiene un notable poder inhibitorio de la corrosi�n, lo que permite mejorar la durabilidad en aceros estructuras.
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Authors

Name	Institution	Email
Michael Geovany Lara Cusba	Universidad Pedag�gica y Tecnol�gica de Colombia	michael.lara@uptc.edu.co
Carlos Gabriel Hern�ndez Carrillo	Universidad Pedag�gica y Tecnol�gica de Colombia	carlosgabriel.hernandez@uptc.edu.co
Robinson de Jes�s Torres G�mez	Universidad Pedag�gica y Tecnol�gica de Colombia	robinson.torres@uptc.edu.co
Lais Mujica Roncery	Universidad Pedag�gica y Tecnol�gica de Colombia	lais.mujica@uprc.edu.co
Yaneth Pineda Triana	Universidad Pedag�gica y Tecnol�gica de Colombia	Yaneth.pineda@uptc.edu.co

Presentation

Room:	Principal Room
Date:	June 10, 2023
Hour:	15:00 - 15:20

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7^th IMRMPT
Seventh International Meeting for Researchers in Materials and Plasma Technology

Previous editions:

        1st IMRMPT 2011
        2nd IMRMPT 2013
        3rd IMRMPT 2015
        4th IMRMPT 2017
        5th IMRMPT 2019
        5+1 IMRMPT 2021

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