Enhanced Corrosion Resistance of Silicone-Modified Epoxy Coatings by Surface-Wave Plasma Treatment

摘要

Silicone-modified epoxy coatings were prepared and treated under different plasma atmospheres inorder to enhance their anticorrosion ability. The corrosion current density, corrosion potential andimpedance of the modified coatings were measured by an electrochemical workstation. The resultsshowed that the corrosion resistances of silicone-modified epoxy coatings were highly improved bysurface-wave plasma treatment. Compared with the original coating, the corrosion current density ofthese coatings modified by plasma decreased from 0.5976 μA/cm 2 to the minimum of 0.0058 μA/cm 2and the impedance increased from 1.925×10 3 Ω·cm 2 to the maximum of 2.938×10 6 Ω·cm 2 , in whichAr plasma showed the best significant effect.