期刊
CORROSION SCIENCE
卷 52, 期 4, 页码 1373-1385出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.01.007
关键词
Acid solutions; AFM; EIS; Acid corrosion; Kinetic parameters
资金
- University Grant Commission (UGC), New Delhi
The inhibition effect of bis-thiadiazole derivatives (BTDs) against the corrosion of mild steel in 1 M HCl solution was studied by weight loss, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization methods. All the BTDs exhibited >90% inhibition efficiency at concentration as low as 40 ppm. The adsorption of BTDs obeyed Langmuir adsorption isotherm. Both thermodynamic and activation parameters were calculated and discussed. Polarization curves indicate that they are mixed type of inhibitors. All the BTDs were adsorbed physically at lower concentration where as chemisorption was favoured at higher concentration. (C) 2010 Elsevier Ltd. All rights reserved.
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