Abstract
Inhibitive effect of N,N'-Dimethylaminoethanol on carbon steel corrosion in neutral sodium chloride solution, at different temperatures
Highlights
Due to low cost and excellent mechanical properties, carbon steel is extensively used in construction and widely applied as the constructional material in large number of industries
This may be imputed to competitive adsorption between the inhibitor molecules and metal surface, which was already covered with initial layers of molecules from the initial inhibitor concentration (0.125 mol.L-1)
The corrosion rate (CR) and corresponding inhibition efficiency (IE%) obtained at studied temperatures are shown in Figures 3 and 4, respectively
Summary
Due to low cost and excellent mechanical properties, carbon steel is extensively used in construction and widely applied as the constructional material in large number of industries. It gets corroded when exposed to aggressive environments like chloride-rich media, which results in terrible wastage of both resources and money This is the reason why the corrosion and passivation behavior of carbon steel are quite general and important phenomena in our daily life. It is reported that the inhibiting action of this compounds is due to the adsorption and/or formation of physical barrier on the metal/solution interface [12, 13] This process depends upon the nature and surface charge of the metal, the type of aggressive media, the chemical structure of the inhibitor, and the nature of its interaction with the metal surface [14, 15]. The present work aims to investigate the efficiency of N,N'-Dimethylaminoethanol (DMEA), an amino alcohol compound, used as an organic corrosion inhibitor for carbon steel in 0.5M NaCl solution, using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The inhibition mechanism of DMEA in the test solution is studied and discussed
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