Effect of neem leaf (Azadirachita indica) extract on the corrosion inhibition of mild steel in dilute acids
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Academic Journals
Abstract
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The corrosion inhibition performance of Neem leaf (Azadirachita indica) extract on the corrosion of mild
steel test specimen immersed in 0.5 M HCl and H2SO4 acids respectively at the ambient temperature of
30°C and elevated temperature of 80°C was investigated. The experimental work was performed by the
use of weight loss method and the potential measurement technique. From the weight loss values,
corrosion rates were determined by calculation. In the results obtained, the leaf extract, in sulphuric
acid medium, gave its best corrosion inhibition performance at 0.50 g/l extract concentration at 30°C. A
more appreciable corrosion inhibition performance was achieved in the dilute hydrochloric acid at 0.25
g/l extract concentration and also at 30°C.
Keywords
T Technology (General), TJ Mechanical engineering and machinery