[a] Department of Chemistry,M.I.E.T.College Engineering, Tiruchirapalli ,Tamilnadu,India
[b] P.G. and Research Department of Chemistry, Jamal Mohamed College, Tiruchirapalli, India
[c] Department ofPhysics,M.I.E.T.CollegeEngineering,Tiruchirapalli ,Tamilnadu, India
Corresponding Author:Email: email@example.com
The inhibition effect organic sulphide compound on the corrosion of copper in 1MHNO3 has been investigated by Weight Loss (WL), Temperature effect and electrochemical techniques such as Potentiodynamic polarization studies were used. Results showed that DPS has good inhibition efficiency on the corrosion of copper in1M HNO3 solution. Polarization measurement indicated that, the studied inhibitor act as a mixed type one. The inhibition efficiency depends on the concentration of inhibitor and reaches 98% at 30oc. The results obtained from the different methods are in good agreement. The SEM and AFM examination of the copper surface revealed that the compound prevented from corrosion by adsorption on its surfaces.
Keywords: Nitric acid, Weight loss, corrosion inhibition, Scanning Electron Microscope(SEM), Electrochemical impedance spectroscopy (EIS).