期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2015
卷号：6
期号：2
页码：598-606
出版社：University of Mohammed Premier Oujda
摘要：The corrosion inhibition properties of 1-(2-etho xy-2-o xoethyl) pyridazinium chloride (EOPC) on carbon steel (CS) in sulfuric acid (0.5 M H 2 SO 4 ) solutio n has been examined and characterized by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The experimental results reveal that the co mpound has a good inhibiting effect on the metal tested in 0.5M H 2 SO 4 solution. The inhibition efficiency for this compound studied increased with the increase in the inhibitor concentrations to attain 91.67 % at the 10 -3 M of EOPC. Polarization curves showed that EOPC acted as a mixed-type in hibitor in sulfuric acid . EIS results show that the change in the impedance parameters (R t and C dl ) with concentration of EOPC is indicative of the adsorption of molecules leading to the formation of a protective layer on the surface of carbon steel. The effect of the temperature on the corrosion behavior with addition of 10 -3 M of the inhibitor was studied in the temperature range 298 -328 K, and the thermodynamic parameters were determined and discussed. The adsorption of this compound on CS surface obeys Langmuir's adsorption isotherm
关键词：Carbon steel ; EIS ; Polarisation ; Pyridazinium ; Adsorption.
