Heliconia rostrata Flower Extract - A New Eco-Friendly Inhibitor for Mild steel Acid Corrosion
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Date
2016
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Abstract
SThe
inhibition effect of Heliconia rostrata flower
extract (HRFE) on mild steel corrosion- in IM HCl
has been studied by conventional mass loss,
electrochemical impedance and Potentiodynamic
polarization techniques. The inhibition efficiency
increased with increase in concentration of plant
extract. Potentiodynamic polarization curves showed
that HRFE acted as mixed inhibitor in hydrochloric
acid. This was supported by the impedance
measurements which showed a change in the charge
transfer resistance and double layer capacitance
indicating adsorption of HRFE on the mild steel
surface. Scanning electron microscopy (SEM)
technique was used to ascertain the inhibitive nature
of the examined inhibitor. Overall results obtained
were encouraging and hence bring to light a new
ecofriendly material for the corrosion inhibition of
mild steel in Hydrochloric acid medium.