Journal
APPLIED SURFACE SCIENCE
Volume 356, Issue -, Pages 341-347Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2015.08.094
Keywords
J55 steel; EIS; Inhibitor; Macrocyclic; SECM; Corrosion
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Funding
- National Natural Science Foundation of China [51274170]
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1,2,4,7,9,10-Hexaazacyclo-pentadeca-10,15-dien-3,5,6,8-tetraone (HPT) a macrocyclic compound has been studied using electrochemical methods and scanning electrochemical microscopy (SECM) techniques. The R-ct values increased and C-dl values decreased with the increase in concentration of the inhibitor. The corrosion inhibition of J55 steel in 3.5 wt.% NaCl solution saturated with CO2 by polarization studies revealed that HPT acted as a mixed type inhibitor. The adsorption of HPT on the J55 steel surface obeyed the Langmuir adsorption isotherm. The thermodynamic parameters (K-ads, Delta G degrees(ads)) were ads, also computed and discussed. (C) 2015 Elsevier B.V. All rights reserved.
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