Abstract: Inhibition of corrosion on AISI 4137 steel in H2SO4 using Cascabela thevetia and Jatropha curcas leaves
as inhibitor was studied using gravimetric and gasometric analysis. It was found that the leaves extract of both
plants act as a good corrosion inhibitor for AISI 4137 steel in all concentrations of the extract ranging from 0.3 -
1.5 g/l and the inhibitive efficiency increases with increasing concentration of inhibitor. Cascabela thevetia has
better surface coverage than Jathropha curcas with their surface coverage been 0.68 and 0.61 respectively. As the
concentration of the inhibitors increases the evolution of the gas decreases with the highest evolution been 23 cm3
and 22 cm3
at 0.3 g/l concentration for both Cascabela thevetia and Jathropha curcas respectively in 7 minutes.
Cascabela thevetia and Jatropha curcas leaves extract are recommended for use in industries as a replacement for
toxic chemical inhibitors.
Key words: Corrosion inhibitor, Cascabela thevetia, Jathropha Curcas, Surface coverage, gasometric, gravimetric
and inhibition efficiency
Akinola, D. (2019). Inhibition of corrosion on AISI 4137 steel in H2SO4 using Cascabela thevetia and Jatropha curcas leaves. Afribary. Retrieved from https://tracking.afribary.com/works/adekunle-jpe-inhibitors
Akinola, Dada Timothy "Inhibition of corrosion on AISI 4137 steel in H2SO4 using Cascabela thevetia and Jatropha curcas leaves" Afribary. Afribary, 21 Feb. 2019, https://tracking.afribary.com/works/adekunle-jpe-inhibitors. Accessed 12 Nov. 2024.
Akinola, Dada Timothy . "Inhibition of corrosion on AISI 4137 steel in H2SO4 using Cascabela thevetia and Jatropha curcas leaves". Afribary, Afribary, 21 Feb. 2019. Web. 12 Nov. 2024. < https://tracking.afribary.com/works/adekunle-jpe-inhibitors >.
Akinola, Dada Timothy . "Inhibition of corrosion on AISI 4137 steel in H2SO4 using Cascabela thevetia and Jatropha curcas leaves" Afribary (2019). Accessed November 12, 2024. https://tracking.afribary.com/works/adekunle-jpe-inhibitors