期刊
APPLIED SURFACE SCIENCE
卷 353, 期 -, 页码 173-183出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.06.128
关键词
Mild steel; Environment friendly inhibitor; Electrochemical calculation; Acid inhibition; SEM
类别
资金
- Indian School of Mines, Dhanbad
Xanthan gum (XG) and its graft co-polymer have been investigated as corrosion inhibitors for mild steel in 15% HCl. Gravimetric analysis, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods were employed for investigating the effectiveness of these inhibitors. Results indicate that both the inhibitors are of mixed type and follow Langmuir adsorption isotherm. Scanning electron microscopy (SEM) study also confirmed the protection of the metal surface by XG and xanthan gum-graft-poly(acrylamide) (XG-g-PAM). Theoretical calculations using Density Functional Theory (DFT) were used to establish the correlation between the structure and corrosion protection efficiencies. (C) 2015 Elsevier B.V. All rights reserved.
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