Review of the Application of Gravimetric and Electrochemical Techniques to Evaluate Corrosion Mechanisms in Metal Materials

Abstract

Corrosion in carbon steels is a phenomenon that causes degradation of mechanical properties; iron alloys are susceptible to corrosion. Factors such as changes in temperature, pH of the medium, and humidity accelerate the corrosion process, and the oxides formed can generate irreversible changes to the material. The evaluation of surface corrosion is necessary to be able to predict in time, to be able to provide good maintenance whether by coatings, inhibitors, or anticorrosive paints, in an opportune way, and to avoid large economic and structural losses. Gravimetric techniques such as mass loss and electrochemical techniques such as Open Circuit Potential-OCP and Electrochemical Impedance Spectroscopy-EIS, help understand the different corrosion mechanisms, simulate real conditions, and generate reproducible studies with efficiency of time and interpretation. This work shows a brief review of gravimetric and electrochemical techniques applied to the evaluation of corrosion of carbon steels.