CORRosion Inhibition Of Mild Steel In Acid Medium Using Canna Indica As Green Corrosion Inhibitor
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Date
2016
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Abstract
The corrosion inhibition of mild steel in 1M HCl by Canna Indica flower extract (CIFE) has been studied by
mass loss method and electrochemical techniques (potentiodynamic polarization and electrochemical impedance
spectroscopy). The results showed that increase in concentration of CIFE decreases the rate of mild steel
dissolution which indicates the inhibitive behaviour of CIFE in acid medium. Electrochemical impedance
spectroscopy (EIS) results showed that corrosion inhibition of mild steel occurred mainly by charge transfer
process. The potentiodynamic polarization results revealed that the acid extracts of CIFE act as mixed type
inhibitor. SEM studies provide strong evidence for the protection of mild steel surface by CIFE inhibitor.