The combination of zinc phosphate/molybdate (Actirox 106) and calcium ion exchange silica (Shieldex CP) has significant synergetic anticorrosion effect for galvanized steel in the acid rain solution compared to the mentioned pigments used alone. It was established by using a model galvanic cell that the acid solution saturated by the pigments mixture Actirox 106/Shieldex CP47394 has similar inhibiting efficiency for cut edge corrosion of galvanized steel as the acid solution saturated by strontium chromate. The SVET technique was able to map and quantify discrete anodic and cathodic sites along the defect, which were due to the inherent localised corrosion behavior of zinc. By summing the anodic potentials measured using SVET for each scan, a quantitative comparison was made of the chromate and chromate-free inhibitors.