Protection of Carbon Steel from Corrosion by Sulfur Nanoparticles Mixed with Meloxicam Drug

Abstract

Inhibition performance of sulfur nanoparticles mixed with meloxicam drugs as corrosion inhibitor by potentiostat technique with metal in 3.5% NaCl Sodium chloride solution based on different temperature. The sulfur nanoparticles were prepared by using Alhagi extra plant with thiosulphate sodium. The surface morphology was studied using the Atomic Force Microscope (AFM) with a size of 100.32 nm. The inhibition efficiency increased with increasing temperature, around 81.94% in 50 oC. With the absence of an inhibitor, the polarization resistance decreased with increasing temperature, Although the resistance to polarization increased in the presence of the inhibitor. Compared to the absence of the inhibitor, the activation energy (Ea) and activation enthalpy Δ H * values for carbon steel increased in the presence of the inhibitor. The values of ΔG were positive, this indicated the non-spontaneousness and increase in the presence of inhibitor.