ZINC PHOSPHATE AS CORROSION INHIBITOR IN EPOXYDIC PAINTS

Pigments are important in paints as protectors from corrosion and inhibitors. The main inhibitor pigment made and used in Spain is zinc phosphate. Zinc phosphate pigment was applied to epoxydic resin-painted carbon steel test bars, subjected to standardized tests, in order to ascertain the corrosion protection. The results show that ohmic resistance values decrease over a period of time. Also, the greater the amount of zinc phosphate, the greater the ohmic resistance and resistance to corrosion. The characterization consisted of EIS tests.