Inhibitive Potential of Prosopis Africana on Corrosion of Low Carbon Steel in 1M Hydrochloric Acid Medium
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
Deer Hill Publications
Abstract
Recently, there is quest for the use of inexpensive, non-toxic, non-biodegradable, readily available and
environmentally acceptable corrosion inhibitor. Studies have shown that these properties could be achieved through
the use of plants as inhibitor. Inhibiting effect of Prosopis Africana (Iron Tree) seed extracts were assessed on a sample
of low carbon steel in 1M HCl with varying proportion of the seed extract using gravimetric, Tafel polarization and
gasometrical measurement techniques. The results show that weight loss/corrosion rate decreases with increase in the
extracts’ concentrations. Good inhibiting efficiency of Prosopis Africana extracts with optimum inhibiting efficiency
of 97.7% at 1.0 g/l after 120 hours exposure in gravimetric measurement was attained. TAFEL polarization results
revealed that the Prosopis Africana extract shows that the corrosion current density decreases with the increase in the
concentration of the extract. The extract is found suitable as green inhibitor for corrosion of low carbon steel in the
studied medium.
Description
Keywords
Mild steel, Prosopis Africana, Weight loss, Inhibiting Efficiency, Tafel Polarization