International Journal of Advanced Research in Chemical Science
Volume-1 Issue-3, 2014, Page No:7-16
Sodium Molybdate –Zn2+ System as Corrosion Inhibitor for AISI 410 Stainless Steel in Sea Water
P.Patric Raymond, A.Peter Pascal Regis,S. Rajendran
1.PG and Research Department of Chemistry, St, Joseph's College (Autonomous), Tiruchirappalli, Tamilnadu, India
2.Corrosion Research Center, RVS School of Engineering and Technology,Dindigul, Tamilnadu, India
Citation : Sodium Molybdate –Zn2+ System as Corrosion Inhibitor for AISI 410 Stainless Steel in Sea Water International Journal of Advanced Research in Chemical Science. 2014;1(3):7-16.
Abstract
The inhibition efficiency of Sodium Molybdate (SM) in controlling corrosion of stainless steel 410 in sea water have been studied in the presence and absence of Zn
2+ has been evaluated by weight loss, Polarization ,FTIR and SEM. SM alone shows good inhibition efficiency. Addition of Zn
2+ ions to the system increases the inhibition efficiency. A synergistic effect existing between SM and Zn
2+ ions. Polarization study reveals that this formulation controls both anodic and cathodic reaction. The surface film was analyzed by FTIR . The surface morphology and roughness of the metal surface have been analyzed by atomic force microscopy (AFM) and scanning electron microscopy (SEM).