Effect of Orphenadrine Citrate Drug on Corrosion of 316L Stainless Steel in Hydrochloric Acid

Abstract

The use of varied quantities of orphenadrine to protect stainless steel againstcorrosion in an acidic media at 298 K has been investigated. It was observed thatwhen the drug's concentration is increased, the drug's speed of corrosion lowers. Thedata of inhibition efficiency (percent IE) in the presence of orphenadrine drug andcorrosion resistance showed that the highest protection efficiency was achieved withthe best concentration, and that the corrosion rate decreased with increasingorphenadrine drug concentrations, making it a good inhibitor for stainless steel in anacidic environment. The theoretical investigation proved the efficiency of the drugfor inhibition, as the drug is absorbed on the surface of the stainless steel by theactive groups in the drug, using the hyperchem-8.07 software to compute themolecular orbital energies.