An inert ionic liquid-based system for ascertaining electrolyte diffusivity in protective coatings
Article
Echeverría, M, Deive, FJ, Sanromán, MA et al. (2015). An inert ionic liquid-based system for ascertaining electrolyte diffusivity in protective coatings
. CORROSION, 71(3), 259-266. 10.5006/1362
Echeverría, M, Deive, FJ, Sanromán, MA et al. (2015). An inert ionic liquid-based system for ascertaining electrolyte diffusivity in protective coatings
. CORROSION, 71(3), 259-266. 10.5006/1362
A strategy based on the use of an inert ionic liquid (IL) has allowed the study of the electrolyte diffusion process in a polysiloxane-based coating applied on steel. The selection of 1-ethyl-3-methylimidazolium ethylsulfate, acting as non-aqueous medium, made it possible to evaluate the protective performance of polysiloxane coating under dry conditions. EIS measurements allowed monitoring of both impedance and capacitance during outward water diffusion, and proved the waterproofing properties of the hybrid coating. Furthermore, samples exposed to continuous and cyclic testing demonstrated an excellent anticorrosive performance. Surface characterization techniques (SEM, EDX, FTIR) were used to prove the absence of appreciable interaction of the selected IL with the polysiloxane coating.
