ABSTRACT

The corrosion inhibition effect of 2-[(2-mercapto-phenylimino) methyl] benzoic acid has been evaluated for mild steel is immersed in simulated concrete pore solution (SCPS) by weight loss method. The weight-loss method was used to calculate the inhibition efficiency and corrosion rate. The efficiency of corrosion inhibition increases as the content of an inhibitor, 2- [(2-mercapto-phenylimino) methyl] benzoic acid, increases. When the concentration of inhibitor is increased, the corrosion rate reduces. This is because a protective coating forms over the mild steel surface at greater concentrations of inhibitor solution, which inhibits the active site of mild steel from becoming active. The creation of a protective coating over the mild steel surface was confirmed using electrochemical measurements. FTIR was used to characterize the surface layer that developed over the mild steel surface. Surface analysis techniques such as scanning electron microscopy can also detect it. SEM was used to examine the smoothness and roughness of mild steel surfaces such as polished, corroded, and inhibitor systems. Keywords: Corrosion, FTIR, Mild steel, Weight loss method and Scanning Electron Microscopy
Publication date: 01/11/2021

https://ijbpas.com/pdf/2021/November/MS_IJBPAS_2021_NOV_SPCL1015.pdf

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https://doi.org/10.31032/IJBPAS/2021/10.11.1015