期刊
CORROSION SCIENCE
卷 53, 期 11, 页码 3566-3575出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.06.029
关键词
Acid solutions; Polarization; EIS; Cathodic protection
The corrosion of carbon steel in 0.5 M HCl at 25 degrees C was investigated in the presence of two synthesized quaternary isoxazolium Schiff base series using gravimetric, polarization and electrochemical impedance measurements. The measurements showed a gradual increase in the inhibitors efficiencies by increasing the dose and hydrophobic chain length. The calculated activation energies proposed that the inhibitor molecules are adsorbed physically onto the metal surface. Surface activity-inhibition tendency relation showed the gradual increase of the inhibition efficiency by increasing the hydrophobic chain length. (C) 2011 Elsevier Ltd. All rights reserved.
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