Protective polymer coating for enhanced corrosion resistance of air receivers in railway coaches

Air receivers in railway coaches usually come under severe degradation due to exposure to external atmosphere and corresponding climatic changes. IS 2062 Steel is used for this application. Frequent cleaning and replacement become part of the process. Polymer based coating can save this material from corrosion and subsequent wear. In this work poly urea coating was carried out on an IS 2062 steel. The corrosion properties of the coating were studied using potentiodynamic polarization test in ASTM standard 3.5%NaCl solution. The corrosion resistance of coated material was compared with the base material. The depth of corrosion of the samples were studied to evaluate the enhancement of corrosion resistance of coated IS206. The poly urea coating enhances codal life of these material by manifold.