Estimation of residual corrosion rates of steel under cathodic protection in soils via voltammetry

Influence of soil moisture on the residual corrosion rates of buried carbon steel structures under cathodic protection

“…For this reason, an electrochemical method was developed to estimate the residual corrosion rates of steel under CP [2,3]. This method was based on the possibility to deduce from a polarization curve the anodic part of the current by subtracting the cathodic part from the overall current.…”

A comparative study on corrosion kinetic parameter estimation methods for the early stage corrosion of Q345B steel in 3.5wt% NaCl solution

“…Corrosion current has therefore long been considered an important research subject for corrosion researchers. A number of techniques have been developed and widely applied in various fields, including nuclear power systems [2][3][4], the petrochemical industry [5][6][7][8][9], aviation and space flight [10], and the construction of reinforced concrete structures [11][12][13][14][15]. These techniques can be classified into two types: non-electrochemical and electrochemical measurements.…”

“…Many electrochemical techniques for estimating corrosion kinetic parameters have been developed, including linear polarization resistance (LPR) [22][23][24][25], potentiodynamic polarization [5][6][26][27][28], electrochemical noise (ECN) [2,4,29], electrochemical impedance spectroscopy (EIS) [30][31][32][33], and harmonic distortion analysis [34][35][36]. However, each of these electrochemical techniques has advantages and disadvantages.…”

An Electrochemical Method for Measuring Localized Corrosion under Cathodic Protection

“…6,7 An important limitation that these methods share in common is that they are limited to systems where the cathodic reaction is strictly charge transfer controlled. 8 Since in many practical applications the cathodic reaction kinetics are controlled by the diffusion of reactants, Barbalat et al 9 have recently attempt to expand the applicability of the method proposed by Stern and Geary 4 to aerated soil by modifying the model used to describe the cathodic reaction. Another limitation of these methods is that they are based on ideally homogenous electrodes and could only provide spatially averaged corrosion information.…”