SEM micrographs of cavitation erosion-corrosion of aluminium alloy 2024 with anodic polarization

The dataset contains Scanning Electron Micrographs of aluminium alloy 2024 samples made after cavitation erosion-corrosion exposure using a vibratory transducer (in accordance with ASTM G32). The experiment duration was 240 min, with cyclic cavitation exposure in on/off cycles 30s:30s. The electrolyte was 0.1 M KNO3 solution. Some samples were anodically polarized by +0.5 V with reference to open circuit potential (labeled as _pol). The samples were mounted directly underneath the ultrasonic transducer. Different levels of cavitation erosion intensity were modulated using the variable distance between the sample and the transducer (randing 0.5 to 3 mm).