4-NAPHTHYL-3-THIOSEMICARBAZIDE AS CORROSION INHIBITOR FOR COPPER IN SEA WATER (3.5% SODUIM CHLORIDE)

Authors : Mothana Ghazı Kadhım ALFALAH, Mohammed ABDULRAZZAQ, Murat SARAÇOĞLU, Fatma KANDEMİRLİ

Pages : 27-34

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Publication Date : 2020-11-03

Article Type : Research Paper

Abstract :The effects of 4-NaTh-3-Thıosemicarbazide on the corrosion of Copper immersed in sea water has been evaluated. The inhibitor efficiency was determined by using three electrochemical techniques, Potential dynamic polarization insert ignore into journalissuearticles values(PDP);, Impedance spectroscopy insert ignore into journalissuearticles values(EIS);, and Open Circuite Potential insert ignore into journalissuearticles values(OCP); by using Potentiostat Instrument type compact stat insert ignore into journalissuearticles values(IVIUM); after immersion in sea water contain 3.5% Sodium chloride with presence and without corrosion inhibitor. A good inhibition efficiency is noticed which increases with an increase in corrosion inhibitor concentration. It was obtained that the inhibitor efficiency reached around 95% at 0,001 M from corrosion inhibitor. Both the cathodic and anodic curves are changed markedly in the presence of 4-NaTh-3-Thıosemıcarbazide. The mechanism of inhibition was proposed along the basis of the adsorption of the inhibitor molecules on the copper surface.
Keywords : 4 NaTh 3 Thiosemicarbazide, Copper, Electrochemical Impedance spectroscopy, OCP