Erosion and corrosion of cooled 1018 steel

A series of erosion-corrosion (E-C) tests was carried out on cooled 1018 steel specimens at 450 °C and 550 °C environmental temperatures (temperature of the gas-particle mixture impacting the cooled specimen surface) at a particle velocity of 20 m s −1 and at impact angles of 30° and 90°, using 250 μm sand particles. The specimens were water-cooled on the backside and the impact surface of the specimens was at several temperatures from room to the environmental temperature. It was found that the cooled 1018 steel specimens had higher metal wastages than uncooled specimens and that the metal wastages were related to the temperature difference between the environment and the surface of the specimens. With an increasing temperature difference, the E-C metal wastage increased, reaching a maximum at a metal surface temperature of 50–90 °C. The metal wastages of specimens cooled to a surface temperature of 25 °C were double those of uncooled specimens tested at 25 °C.