Fluorinated surfactants have comprehensive performance superior to non-fluorinated ones, however, their role as metal corrosion inhibitors is elusive. Herein, two fluorinated surfactants, one bearing a branched chain perfluoro group (BFIS) derived from hexafluoropropene trimer and the other bearing a straight chain perfluorohexanesulfonyl group (SFIS), were synthesized and comparatively investigated for their anticorrosion performance on carbon steel in HCI solution. Potentiodynamic polarization and electrochemical impedance spectroscopy revealed that BFIS possessed a corrosion inhibition effi...
