Volume : 10, Issue : 2, FEB 2024

CORROSION EVALUATION ON MILD STEEL IN ACIDIC MEDIA

SUNDAY, O. S.

Abstract

Corrosion of mild steel has threatened global industrial growth globally. In this research work, an assessment of corrosion of locally produced mild steel in tetraoxosulphate (VI) acid (H2SO4) and hydrochloric acid (HCl) were done. The collected samples from Ilorin, Kwara State, Nigeria after chemical analysis were machined to the same sizes. Each of the samples was immersed in equal volumes of the selected media. The assessment of effect of corrosion on the mild steel samples used was carried out via weight loss at various exposure times which lasted for duration of 45 days. The results obtained indicated that tetraoxosulphate (VI) acid was most aggressive environment. The average weight loss are 5.04g (H2SO4) and1.20g (HCL) with corresponding corrosion rate of values 0.066 and 0.017 (mm/yr). The follow up statistical analysis output showed that loss in weight is significant for tetraoxosulphate (VI) acid when compared with hydrochloric acid (HCl). Thus, it can be concluded that of the two media examined, tetraoxosulphate (VI) acid is the most corrosive, followed by hydrochloric acid degree of corrosiveness. Therefore, facilities and equipment made of mild steel should not be used in an environment containing traces of acidic ions due to the hazardous effect it has on mild steel material.

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