Journal
CORROSION SCIENCE
Volume 61, Issue -, Pages 1-9Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2012.03.045
Keywords
Mild steel; Polarization; EIS; Modeling studies; Acid inhibition
Funding
- National Natural Science Foundation [21176116]
- Natural Science Foundation of Jiangsu Province [BK2011800]
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Inhibition performance of 2-(4-pyridyl)-benzimidazole (PBI) against corrosion of mild steel in 1.0 M HCl was investigated by weight loss and electrochemical measurements. The inhibition efficiency increased with increasing inhibitor's concentration, but decreased with the increase in temperature and concentration of the acid. The theoretical results from DFT and MD simulations reveal that adsorption of PBI depends on the formation of coordinative bonds between PBI molecule and iron surface, and the binding energy between FBI molecule and iron surface is the highest among the three studied compounds. (C) 2012 Elsevier Ltd. All rights reserved.
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