Electrochemical performance of nano engineered-coatings based on antimicrobial nano-alloy in corrosive environment Conference Paper uri icon

abstract

  • 2017 by NACE International. This work include the utilization of electrochemical impedance spectroscopy as a characterization tool for antimicrobial nano alloy (ANA) as an epoxy filler in corrosive environments. Steel panels with two different coating formulations having in common an ANA component were tested. The formulations included fusion bonded epoxy (FBE) and epoxy-TiO2 Marine coatings with different ANA percentages and were applied onto a steel panel by flame spray apparatus. The panels were immersed in 3.5 weight percent of NaCl solution and characterized by using electrochemical impedance spectroscopy (EIS) and material characteristics. EIS presents the interfacial mechanism coating/substrate and particles/coating interface when the ANA concentration is modified, and the barrier effect demonstrates the water uptake process while the charge transfer process demonstrates the dominant mechanism with time. The increase in the ANA percentage does not induce galvanized corrosion within the coatings. This work presents the results of two different set of coatings following different exposure times and additive concentrations (ANA) based on the classical electrochemical impedance spectroscopy testing and scanning vibrating electrode technique.

published proceedings

  • NACE - International Corrosion Conference Series

author list (cited authors)

  • Chiu, T. M., Hunt, E. M., Allen, B., & Castaneda, H.

publication date

  • January 1, 2017 11:11 AM