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Effect of lecaniodiscus cupaniodes extract in corrosion inhibition of normalized and annealed mild steels in 0.5 M HCl

Joseph, O. O and Fayomi, O. S. I and Adenigba, O.A (2017) Effect of lecaniodiscus cupaniodes extract in corrosion inhibition of normalized and annealed mild steels in 0.5 M HCl. In: International Conference on Technologies and Materials for Rene wable Energy, Environment and Sustainability, TMREES1, 21-24 April, Beirut Lebanon.

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Abstract

mild steels in 0.5 M hydrochloric acid (HCL) was evaluated. Gravimetric and potential measurements were used for the experimental work. The results revealed that Lecaniodiscus cupaniodes performed effectively at inhibiting the rate of corrosion attack on the heat-treated steels in 0.5 M HCl medium with an average inhibition efficiency of 90 percent (%). However, the effectiveness of the extract as an inhibitor was found to be dependent on the exposure period for the annealed samples. Corrosion rates of the two heat-treated steels were significantly affected by the concentration of lecaniodiscus cupaniodes extract. At the end of the 34-days exposure period, only 5 ml concentration of the extract gave the best inhibition efficiency for the annealed and normalized steels - 77.09 % and 82.57 % respectively. The significance of the results was further determined via two-factor Analysis of Variance (ANOVA) test. The statistical analysis confirms the effect of extract concentration and exposure time on corrosion behaviour with 95 percent confidence.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 22 Sep 2017 10:27
Last Modified: 22 Sep 2017 10:27
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/9400

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