A study on the inhibition effect of expired amoxicillin on mild steel corrosion in 1N HCl

Fadila B. , Sihem A., Sameh A., Gulfeza K.

MATERIALS RESEARCH EXPRESS, cilt.6, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 6 Konu: 4
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1088/2053-1591/aafcd7


The adsorption and inhibitor effect of Expired Amoxicillin (E.A) on mild steel in 1 N HCl was studied by weight loss, potentiodynamic polarization, Electrochemical Impedance Spectroscopy (EIS), zero-charge potential method (PZC) and characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The inhibition efficacy obtained by gravimetry is 94.47% at 1800 ppm after 8 h immersion. Amoxicillin acts as a mixed inhibitor. The surface is negatively charged. E.A adsorption on mild steel surface obeys Langmuir isotherm, with a spontaneous process, the E.A molecules are physisorbed.