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Novel Corrosion Inhibitor for Mild Steel in HCl
Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia
Environmental Research Center, University of Technology (UOT), Baghdad 10001, Iraq
* Author to whom correspondence should be addressed.
Received: 1 November 2013; in revised form: 28 November 2013 / Accepted: 17 December 2013 / Published: 27 January 2014
Abstract: Corrosion inhibitory effects of new synthesized compound namely 5,5'- ((1Z,1'Z)-(1,4-phenylenebis(methanylylidene))bis(azanylylidene))bis(1,3,4-thiadiazole-2-thiol) (PBB) on mild steel in 1.0 M HCl was investigated at different temperatures using open circuit potential (OCP), potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). Results showed that PBB inhibited mild steel corrosion in acid solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor, but decreased proportionally with temperature. Changes in impedance parameters suggested the adsorption of PBB on the mild steel surface, leading to the formation of protective films.
Keywords: mild steel; thiadiazole; OCP; EIS; corrosion inhibition
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Al-Amiery, A.A.; Kadhum, A.A.H.; Alobaidy, A.H.M.; Mohamad, A.B.; Hoon, P.S. Novel Corrosion Inhibitor for Mild Steel in HCl. Materials 2014, 7, 662-672.
Al-Amiery AA, Kadhum AAH, Alobaidy AHM, Mohamad AB, Hoon PS. Novel Corrosion Inhibitor for Mild Steel in HCl. Materials. 2014; 7(2):662-672.
Al-Amiery, Ahmed A.; Kadhum, Abdul A.H.; Alobaidy, Abdul Hameed M.; Mohamad, Abu B.; Hoon, Pua S. 2014. "Novel Corrosion Inhibitor for Mild Steel in HCl." Materials 7, no. 2: 662-672.