shows the plots of |Z|0.01 Hz against immersion time in 3.5% NaCl solution for the steel coated with the paint without
or with PANI pigments at concentrations of 0.5, 1.5 or 3%. In the initial time of exposure to the NaCl solution, the
|Z|0.01 Hz reflects the pore resistance of the coating. The initial |Z|0.01 Hz for coatings with PANI–BS and PANI–LS1 pigments appear lower than that measured with the coating with no PANI while PANI–LS2 pigments lead to the highest initial
|Z|0.01 Hz of all other coating formulations