Abstract
Ships’ hulls are typically coated with coating systems which have both anticorrosive and antifouling purposes, and consist of a primer, a tie coat, and an antifouling coat. Within this study, the protective properties of two different anticorrosion–antifouling coating systems are evaluated in a humid and warm atmosphere, as well as in a simulated marine environment utilizing salt spray chamber testing and immersion tests with and without agitation. The tested coating systems differ in the type of antifouling coating, i.e., self-polishing antifouling based on copper, and a new fouling-release coating based on miscellaneous components. The corrosion performances of Stojanović coatings in natural seawater are examined using open circuit potential measurements, electrochemical impedance spectroscopy, and pull-off tests. The antifouling properties are reviewed by visual examination, measurements of coating roughness before and after exposure to the testing solution, and after immersion in a solution containing Saccharomyces cerevisiae by measuring the optical density. The obtained results show better corrosion and antifouling properties of the coating system with a self-polishing antifouling top coat compared to the coating system with the foul-release top coat. A thicker biofilm was noticed on the plates immersed in seawater with agitation compared to stationary conditions for both antifouling coatings.
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Stojanović, I., Farkas, A., Alar, V. et al. Evaluation of the Corrosion Protection of Two Underwater Coating Systems in a Simulated Marine Environment. JOM 71, 4330–4338 (2019). https://doi.org/10.1007/s11837-019-03669-4
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DOI: https://doi.org/10.1007/s11837-019-03669-4