Umudike Journal of Engineering and Technology

Michael Okpara University of Agriculture, Umudike


CORROSION INHIBITION PROPERTIES OF CHRYSOPHYLLUM ALBIDUM SEED EXTRACT ON MILD STEEL

Okoye, O. A.
Department of Mechanical Engineering, Michael Okpara University of Agriculture, Umudike

Allen, M. A.
Department of Mechanical Engineering, Michael Okpara University of Agriculture, Umudike

Obi, A. I.
Department of Mechanical Engineering, Michael Okpara University of Agriculture, Umudike



ABSTRACT

The corrosion inhibition properties of Chrysophyllum Albidum (African Star Apple) seed extract on mild steel were investigated. The extract was used as a corrosion inhibitor on mild steel in different corrosive mediums; hydrochloric acid, sea water and distilled water. Mild steel was immersed in different concentrations of hydrochloric acid (0.5 moles, 1.0 mole, 1.5 moles, 2.0 moles and 2.5 moles), sea water and distilled water and the effects of corrosion on the mechanical properties of mild steel was studied using Izod impact test and weight loss method. Mild steel rods were immersed for a total of forty-two (42) days. The weight loss and impact strength were determined at an interval of seven (7) days. It was discovered that as the concentration of the inhibitor increases, the rate of corrosion decreases. Also, the inhibitor efficiency attained an optimal of 78% of 30 moles extract in 2.0 moles of hydrochloric acid. It was also noted that there was a high loss of strength due to the mild steel rods corrosion rate without the Chrysophyllum Albidum (African Star Apple) seed extract.


Keywords: Impact strength, Corrosion, Weight loss, Inhibition efficiency, Inhibitor extract


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Published
Friday, December 18, 2015

Issue
Vol. 1 No. 2, DEC 2015

Article Section
GENERAL

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