ABSTRACT
The behaviour of zinc-rich epoxy paints in 3% NaCl solution has been studied with respect to the effect of grain size of the zinc particles using Electrochemical Impedance Spectroscopy (EIS) and electrode potential measurements. Results show that the size and distribution of the zinc particles play an important role in the cathodic protection period of the system. It was concluded that film thickness, contact impedance and electrolyte resistivity are the significant parameters involved in an efficient cathodic protection of the steel substrate.
