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Open AccessArticle

Novel Corrosion Inhibitor for Mild Steel in HCl

1
Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia
2
Environmental Research Center, University of Technology (UOT), Baghdad 10001, Iraq
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Author to whom correspondence should be addressed.
Materials 2014, 7(2), 662-672; https://doi.org/10.3390/ma7020662
Received: 1 November 2013 / Revised: 28 November 2013 / Accepted: 17 December 2013 / Published: 27 January 2014
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. View Full-Text
Keywords: mild steel; thiadiazole; OCP; EIS; corrosion inhibition mild steel; thiadiazole; OCP; EIS; corrosion inhibition
MDPI and ACS Style

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.

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