Corrosion inhibition performance of different bark extracts on aluminium in alkaline solution
By Chaubey, Namrata; Savita; Singh, Vinod Kumar; Quraishi, M. A.
Published in Journal of the Association of Arab Universities for Basic and Applied Sciences
NULL
2017
Abstract
Abstract The present work shows the effect of stem bark extracts of three trees namely Moringa oleifera (MO), Terminalia arjuna (TA) and Mangifera indica (MI) on the corrosion behaviour of Aluminium Alloy (AA) in 1 M NaOH. The inhibition performance was studied by using gravimetric, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. Among these extracts, {MO} exhibited the maximum inhibition efficiency ? (%) of 85.3% at 0.6 g/L at 303 K. Polarization measurement showed that all the examined extracts are of mixed-type inhibitors. Langmuir
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