CORROSION INHIBITION OF AISI 1007 STEEL IN HYDROCHLORIC ACID USING CUCUMIS SATIVUS (CUCUMBER) EXTRACTS AS GREEN INHIBITOR
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Date
2018-10
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Volume Title
Publisher
Faculty of Engineering Hunedoara, University of Politehnica, Timisoara
Abstract
The inhibiting effect of cucumber peel and seed extracts on corrosion of AISI 1007 steel in 2M solution of Hydrogen
Chloride (HCl) at ambient temperature was studied using gravimetric and electrochemical measurements (TAFEL polarization). It
was observed that corrosion rates reduced with increase in the extracts’ concentration, and inhibition efficiency (IE%) increased
with the concentration. The study revealed that the cucumber extracts possessed good inhibiting efficiency. Though, the
cucumber peel extract’s efficiency was greater than that of the seed (oil) extract during gravimetric measurement. The highest
inhibition efficiency (IE) of 86.63% was achieved using the cucumber peel extract as inhibitor with 1.0 g/l concentration, while
cucumber seed (oil) extract recorded 39.23%. The electrochemical measurements (TAFEL polarization) results revealed that the
corrosion current density decreased with the increased in the concentration of the cucumber peel extract. The decreased in
corrosion was due to increased blocking of the metal surface by adsorption of the leaf extract. Therefore, the extracts could be
used as a green inhibitor to the corrosion of AISI 1007 steel in the hydrochloric acid medium as a replacement for toxic inhibitors.
Keywords: Tafel Polarization, Gravimetric, Current Density, Metal Surface Adsorption, Inhibiting Efficiency
Description
Corrosion Control
Keywords
Tafel Polarization, Gravimetric, Inhibiting Efficiency, Current Density,, Metal Surface Adsorption,
Citation
19. Shuaib-Babata, Y. L., Busari, Y. O., Yahya, R. A. & Abdul, J. M. (2018).ACorrosion inhibition of AISI 1007 steel in hydrochloric acid using cucumis sativus (cucumber) extracts as green inhibitor. ACTA Technica Corvinensis – Bulletin of Engineering. XI (4); 153-161