Electrochemical Impedance Spectroscopy (EIS) is a non-destructive and powerful technique for characterizing corrosion systems, allowing for the evaluation of surface reaction mechanisms, mass transport, kinetic evolution, and corrosion levels of materials. This study aims to analyze the progression of corrosion using EIS, with a focus on the influence of organic coating thickness. For this purpose, layers of high-purity epoxy paint were applied to carbon steel plates with thicknesses of 50 µm, 80 µm, and 100 µm. During the research, a direct correlation was observed between coating thickness and corrosion resistance, emphasizing the importance of identifying the optimal thickness for each type of coating. Additionally, it was found that thicker coatings may experience electrode penetration due to the tensions generated during deposition, resulting in cracks between the layers, while thinner coatings allow electrolyte penetration as they do not provide adequate protection to the base steel. Therefore, the 80 µm thickness demonstrated greater resistance to corrosion compared to the other tested thicknesses.

Influence of Organic Coating Thickness on Electrochemical Impedance Spectroscopy Response / de Paula, Amanda Suellen; Aroeira, Barbara Mitraud; Souza, Lucas Henrique de Oliveira; da Cruz, Alisson Cristian; Fedel, Michele; da Silva, Brunela Pereira; Cotting, Fernando. - In: COATINGS. - ISSN 2079-6412. - 14:3(2024), p. 285. [10.3390/coatings14030285]

Influence of Organic Coating Thickness on Electrochemical Impedance Spectroscopy Response

Souza, Lucas Henrique de Oliveira;Fedel, Michele;
2024-01-01

Abstract

Electrochemical Impedance Spectroscopy (EIS) is a non-destructive and powerful technique for characterizing corrosion systems, allowing for the evaluation of surface reaction mechanisms, mass transport, kinetic evolution, and corrosion levels of materials. This study aims to analyze the progression of corrosion using EIS, with a focus on the influence of organic coating thickness. For this purpose, layers of high-purity epoxy paint were applied to carbon steel plates with thicknesses of 50 µm, 80 µm, and 100 µm. During the research, a direct correlation was observed between coating thickness and corrosion resistance, emphasizing the importance of identifying the optimal thickness for each type of coating. Additionally, it was found that thicker coatings may experience electrode penetration due to the tensions generated during deposition, resulting in cracks between the layers, while thinner coatings allow electrolyte penetration as they do not provide adequate protection to the base steel. Therefore, the 80 µm thickness demonstrated greater resistance to corrosion compared to the other tested thicknesses.
2024
3
de Paula, Amanda Suellen; Aroeira, Barbara Mitraud; Souza, Lucas Henrique de Oliveira; da Cruz, Alisson Cristian; Fedel, Michele; da Silva, Brunela Pereira; Cotting, Fernando
Influence of Organic Coating Thickness on Electrochemical Impedance Spectroscopy Response / de Paula, Amanda Suellen; Aroeira, Barbara Mitraud; Souza, Lucas Henrique de Oliveira; da Cruz, Alisson Cristian; Fedel, Michele; da Silva, Brunela Pereira; Cotting, Fernando. - In: COATINGS. - ISSN 2079-6412. - 14:3(2024), p. 285. [10.3390/coatings14030285]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/403708
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