Abstract
The inhibition performance of Arachis hypogaea (AH) surfactant-based oil on 316L steel in 5 M HCl solution was studied by weight loss method. Result showed that AH shielded 316L steel from the severe corrosion effect of of Cl- anions responsible for 316L corrosion in HCl at 0% AH concentration. The optimum inhibition efficiency occurred as 89.72% at 504 h as AH retarded the redox reaction for all other samples of inhibited AH inhibitor concentration. Adsorption of AH onto 316L surface was effective as the regression values moved close to unity with 0.9458, obeying Langmuir isotherm adsorption principle.
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