LI Wei, CAO Jingyi, XIONG Jinping, et al. EIS of corrosion process of steel with zinc-rich epoxy/chlorinated rubber coatings[J]. CIESC Journal, 2007, (10): 2543-2547.
LI Wei, CAO Jingyi, XIONG Jinping, et al. EIS of corrosion process of steel with zinc-rich epoxy/chlorinated rubber coatings[J]. CIESC Journal, 2007, (10): 2543-2547.DOI:
The failure process of zinc-rich epoxy/chlorinated rubber coatings on Q235 steel was investigated by electrochemical impedance spectroscopy (EIS)In the initial period of exposure
EIS spectra showed that the protection effect of the coatings mainly came from the chlorinated rubber topcoatBut after a longer time of exposure
by increasing the zincrich epoxy primer thickness properly
the porosity of the coatings
the diffusion rate of ions and the absorbance of water in the coatings decreased remarkablyThe best protection was obtained for the coating systems with the thickness ratio of primer/topcoat about 2∶1For the systems of single primer or single topcoat
the protection effect of the coatings decreased quickly.