linear polarization

Linear Polarization is also known as Linear Sweep Voltammetry (LSV). It is an electrochemical technique, where the potential is increased or decreased with time in a linear way while the current is recorded. The plot of this technique is an I versus E curve known as the Polarization Curve or Linear Sweep Voltammogram.

In corrosion studies Linear Polarization is used around the corrosion potential and afterwards the polarization curve is used to perform a Tafel Analysis to acquire the corrosion potential, corrosion current and corrosion rate.

Figure 5.2 a | typical polarization curve b | automated Tafel plot and fit with extrapolated values