期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2016
卷号：7
期号：1
页码：299-309
出版社：University of Mohammed Premier Oujda
摘要：The inhibitive action of some pyrazole derivatives, namely N1, N1-bis (2-(bis ((3,5-dimethyl-1H-pyrazol-1-yl) methyl) amino)ethyl)-N2, N2-bis ((3,5-dimethyl-1H-pyrazol-1-yl) methyl) ethane-1,2-diamine: PAP and diethyl 1,1'-(((4-acetylphenyl) azanediyl) bis (methylene)) bis (5-methyl-1H-pyrazole-3-carboxylate): PAC against the corrosion of mild steel in 1 M HCl solution has been investigated using weight loss measurements, Tafel polarisation and electrochemical impedance spectroscopy (EIS) techniques. The experimental results obtained revealed that these compounds inhibited the steel corrosion in acid solution, the protection efficiency increased with increasing inhibitors concentration. The results obtained from the different corrosion evaluation techniques are in good agreement. Potentiodynamic polarisation studies clearly showed that PAP and PAC acted as mixed inhibitors affecting both cathodic and anodic corrosion currents. Adsorption of these inhibitors on steel surface obeyed to Langmuir adsorption isotherm. Thermodynamic data of adsorption showed that inhibition of steel corrosion in 1M HCl solution by pyrazole compounds is due to the formation of a chemisorbed film on the steel surface. SEM and EDX supported the adsorption conclusions
