Browsing by Author "Mathina, A"
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Item Corrosion Inhibition of Mild Steel In Acid Medium Using Canna Indica as Green Corrosion Inhibitor(2016) Mathina, AThe corrosion inhibition of mild steel in IM HCI by Canna Indicci 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. Keywords: Corrosion, Mild steel, Canna Indica (lower extract (CIFE), Acid medium, SEM.Item Heliconia rostrata Flower Extract - A New Eco-Friendly Inhibitor for Mild steel Acid Corrosion(2016) Mathina, ASThe 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.Item "Plant - Mediated Green Synthesis of Zinc Oxide Nanoparticles from Alocasia Odora Leaves"(2023-05) Annapoorani, M; Mathina, A