A program of tests is described in which steel substrates with various coatings were subjected to both pure erosion and erosion-corrosion conditions. Sand slurries, with and without 3% sodium chloride, were used at moderate velocities to create arduous conditions for test
coupons. Analysis methods such as Electrochemical Impedance Spectroscopy (EIS) and corrosion current measurements were correlated with information from sectioned samples. Flexible polyurethane seems to have promise for future use in aggressive saline environments,
Keywords: Coatings, erosion-corrosion, seawater, flow conditions, pipes, slurry test.