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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
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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