Anticorrosive evaluation of Sio2-Tio2-Zro2 ceramic trilayers synthesized by the Sol-Gel method

Evaluación anticorrosiva de tricapas cerámicas Sio2-Tio2-Zro2 sintetizadas por el método Sol-Gel

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Jorge Hernando Bautista Ruiz
César Armando Ortiz Otálora

Abstract

The conformation of trilayers of ceramic coatings of the SiO2-TiO2-ZrO2 system is shown, synthesized by the Sol-gel method, using Si (OC2H5) 4, Ti (OBu) 4 and Zr (OC3H7) 4 as precursors, as EtOH and water, and as a complexing agent 2,4 pentanedione. The ceramic coatings were deposited on AISI / SAE 304 stainless steel substrates using the dip-coating technique. The influence of the coatings on the anticorrosive behavior of the substrate in a 3% HCl solution was studied using Electrochemical Impedance Spectroscopy (EIS) techniques and potentiodynamic polarization curves. Additionally, a morphological study was performed using the Atomic Force Microscopy (AFM) technique. The values of the electrochemical parameters were found to change substantially with the concentration of the precursors added to the effects of the film on the substrate.

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Author Biographies (SEE)

Jorge Hernando Bautista Ruiz, Universidad Pedagógica y Tecnológica de Colombia

Físico. Estudiante de Maestría Universidad Pedagógica y Tecnológica de Colombia. Grupo de Investigación en Superficies Electroquímicay Corrosión –GSEC–.

César Armando Ortiz Otálora, Universidad Pedagógica y Tecnológica de Colombia

Máster. Físico. Docente Escuela de Física, Universidad Pedagógica y Tecnológica de Colombia. Grupo de Investigación en Superficies Electroquímica y Corrosión –GSEC–.

References (SEE)

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