Abstract
The corrosion inhibition of mild steel is the subject of tremendous technological importance due to the increased industrial applications of these materials. This study reports the corrosion inhibition of mild steel in acidic solution of 0.5 M HCl using root extract of Uvaria chamea by way of gravimetric measurements. It was shown that the presence of U. chamea root extract inhibited the corrosion of mild steel in the test solution and the inhibition efficiency depended on the concentration of the plant extract as well as on the time of exposure of the mild steel samples in HCl solutions containing the extract. The experimental data complied to the Langmuir and Temkin adsorption isotherms. From the results obtained authenticates that the root extracts of U. chameafavours both cathodic and anodic inhibitor. The adsorption mechanism is both chemisorptions and physisorption. Key words: Corrosion inhibition, mild steel, adsorption mechanism, Uvaria chamea, Langmuir and Temkin isotherms.
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