Corrosion inhibition behavior of Ketosulfone for Zinc in acidic medium

Abstract

The corrosion inhibition behavior of Ketosulfone for zinc is investigated by polarization and AC-impedance techniques at 303-333K. The Tafel plots indicates that the Ketosulfone is a mixed type inhibitor. The interaction between metal and inhibitor is explained by Langmuir adsorption isotherm.  DG⁰ads andDH⁰ads value indicates the electrostatic interactions between metal and inhibitor. Calculated activation parameters explains the corrosion process. SEM images show the difference between inhibited solutions and blank solution.

Keywords: corrosion inhibitor; adsorption; Langmuir isotherm; Zinc.