PalmSens Knowledge Base

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 1: a | typical polarization curve, b | automated Tafel plot and fit with extrapolated values

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