Novel Corrosion Inhibitor for Mild Steel in HCl

Materials

Ahmed A. Al-Amiery¹  Abdul Amir H. Kadhum¹  Abdul Hameed M. Alobaidy²  Abu Bakar Mohamad¹ 

[1] Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor 43000, Malaysia; E-Mails:;Environmental Research Center, University of Technology (UOT), Baghdad 10001, Iraq; E-Mails:

关键词: mild steel;    thiadiazole;    OCP;    EIS;    corrosion inhibition;   

DOI  :  10.3390/ma7020662

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland