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(a) Schematic illustration of a typical ball-on-disc (rotating) tribocorrosion experimental set-up that allows the measurement of corrosion potential (RE: standard silver/silver chloride or Ag/AgCl reference electrode); (b) Measurement of the corrosion potential of Ti6Al4V alloy rubbing against an alumina ball in a 0.9% NaCl solution (adapted from references [21,22], with permission from © Elsevier), where Ecorr = potential difference between working electrode (WE) and RE.
