ABSTRACT

The corrosion inhibition of carbon steel is sunken in 0.5N hydrochloric acid has been evaluated at room temperature by using the mass loss method. The corrosion rate and inhibition efficiency have been attained from the mass loss method. The efficiency of corrosion inhibition improves when the content of an inhibitor, specifically aqueous leaves extract of the oxalis corniculata linn plant, is increased. When the concentration of inhibitor is increased, the corrosion rate reduces. This is because a protective coating forms over the carbon steel surface at greater concentrations of inhibitor solution, which prevents the active site of carbon steel from becoming active. The creation of a protective coating over the carbon steel surface was investigated using electrochemical tests. Surface analysis techniques such as scanning electron microscopy can also detect it. Smoothness and roughness of carbon steel surface like polished, corroded and inhibitor system has been appraised by SEM. Keywords: Acidic solutions, Corrosion, Carbon steel, Mass loss method, oxalis corniculata linn plant and Scanning Electron Microscopy
Publication date: 01/11/2021

https://ijbpas.com/pdf/2021/November/MS_IJBPAS_2021_NOV_SPCL1016.pdf

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https://doi.org/10.31032/IJBPAS/2021/10.11.1016