International Journal of Multidisciplinary Research and Development

International Journal of Multidisciplinary Research and Development


International Journal of Multidisciplinary Research and Development
International Journal of Multidisciplinary Research and Development
Vol. 4, Issue 7 (2017)

Inhibition of metal corrosion using Ficus natalensis and Ficus ovata bark extracts


Magoola Abel, Mghweno Leonard Richard

The study investigated the inhibitive properties of Ficus natalensis and Ficus ovata bark extracts in inhibiting metal corrosion and determined the best metal corrosion inhibitor between the two bark extracts. Gasometrical method was conducted in two phases: the preparation phase where the bark extracts were made into solution form and the experimental phase. The experimental phase had three sets: the blank system which had the corrodent (hydrochloric acid) only, the factor that caused corrosion on the metal surface, the second and third sets had Ficus natalensis and Ficus ovata bark extracts as corrosion inhibitors, respectively. Hydrogen gas was collected from each set with time. The results revealed that an increase in concentration of the corrodent increased the corrosion rate on magnesium metal ranging from 0.2252m1s-1 to 0.3982m1s-1. Furthermore, an increase in concentration of any inhibitor into the corrodent reduced corrosion rate from 0.2775 mls-1 to 0.1230mls-1 and from 0.1858mls-1 to 0.0848 mls-1 for Ficus natalensis and F.ovata, respectively. It was concluded that the bark extracts can prevent corrosion in metals thus had corrosion inhibitive properties on metals; and that F. ovata had high efficiency at all concentrations (ranging from 29.1% to 54.6%) compared to Ficus natalensis (16.3% to 38.6%).
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How to cite this article:
Magoola Abel, Mghweno Leonard Richard. Inhibition of metal corrosion using Ficus natalensis and Ficus ovata bark extracts. International Journal of Multidisciplinary Research and Development, Volume 4, Issue 7, 2017, Pages 221-224
International Journal of Multidisciplinary Research and Development