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Novel Corrosion Inhibitor for Mild Steel in HCl

Al-Amiery AA 1 , Kadhum AAH 2 , Alobaidy AHM 3 , Mohamad AB 4 , Hoon PS 5

Affiliations 

  • 1 Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia. [email protected]
  • 2 Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia. [email protected]
  • 3 Environmental Research Center, University of Technology (UOT), Baghdad 10001, Iraq. [email protected]
  • 4 Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia. [email protected]
  • 5 Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia. [email protected]
Materials (Basel), 2014 Jan 27;7(2):662-672.
PMID: 28788482 DOI: 10.3390/ma7020662

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.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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