期刊
CORROSION SCIENCE
卷 65, 期 -, 页码 152-162出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2012.08.012
关键词
Mild steel; EIS; Polarization; Acid inhibition; Interfaces
资金
- Universiti Sains Malaysia through the RU-USM-Postgraduate Research Grant Scheme [1001/PKIMIA/833026]
This article describes studies on the modification of mangrove tannin (MT) and catechin (CT) to enhance their corrosion inhibition properties. The inhibitive effect of the starting materials and the chemically modified products on the corrosion of mild steel in 1 M HCl solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). We demonstrated that the chemical modification has successfully enhanced the inhibition efficiency of CT; however reduced that of MT. The disparity in the corrosion inhibitory performances of the modified products was attributed to the inertness of CT towards a complete methylation as compared to MT. (C) 2012 Elsevier Ltd. All rights reserved.
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