Corrosion Inhibition Properties of Telfaira occidentalis Leaf Extract on Aluminium in 1.5M HCl Medium
DOI:
https://doi.org/10.53555/nnas.v2i11.673Keywords:
Telfaira occidentalis, Aluminium, induction time, corrosion inhibition, Langmuir adsorption isothermAbstract
Corrosion inhibition of aluminium by leaf extract Telfaira occidentalis in 1.5 M HCl was investigated using the gasometric technique at 28oC. Results obtained showed that the extract displayed high inhibition efficiency against corrosion of aluminium in 1.5 M HCl solution. The extract displayed nearly the inhibition efficiencies at concentration range 10 – 50% dilution of the extract. The corrosion inhibition mechanism followed Langmuir adsorption isotherm at the studied temperature. This suggests the extract constituent chemisorbed on the aluminium surface forming a protective film minimising direct contact with the corrodent.
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