Corrosion Resistance and Mechanism of Zinc Rich Paint in Corrosive Media

摘要: Zinc is widely used as sacrificial protecting coating in process industries, constructions and buildings. Due to the fact that, zinc less noble metal cathodically protects steel from corrosion. A rich paint (ZRP) was sprayed onto substrate, using electrochemical impedance spectroscopy (EIS) properties investigated. Coated samples were immersed 0.5 M NaCl solution various time period, EIS measurements regularly performed. Then, an electrical equivalent circuit (EEC) applied model mechanism. Using this model, it found that dispersion of particles inhomogeneous. The responses slightly different with increases thickness contents.