Author/Authors :
Benzidia, Bouchra Laboratory of Materials, Electrochemistry and Environment (LMEE) - Department of Chemistry -Faculty of Science - Ibn Tofail University, Kenitra, Morocco , Hammouch, Ahmed Laboratory of Materials, Electrochemistry and Environment (LMEE) - Department of Chemistry -Faculty of Science - Ibn Tofail University, Kenitra, Morocco , Dermaj, Hind Laboratory of Materials, Electrochemistry and Environment (LMEE) - Department of Chemistry -Faculty of Science - Ibn Tofail University, Kenitra, Morocco , Benassaoui, Hayat Laboratory of Materials, Electrochemistry and Environment (LMEE) - Department of Chemistry -Faculty of Science - Ibn Tofail University, Kenitra, Morocco , Abbout, Said Laboratory of Materials, Electrochemistry and Environment (LMEE) - Department of Chemistry -Faculty of Science - Ibn Tofail University, Kenitra, Morocco , Hajjaji, Najat Laboratory of Materials, Electrochemistry and Environment (LMEE) - Department of Chemistry -Faculty of Science - Ibn Tofail University, Kenitra, Morocco
Abstract :
The objective of this work is the development of a new green inhibitor extracted from Aloe vera (L.) Burm. F. (syn. Aloe barbadensis Mill.) for the corrosion inhibition of bronze B66 in a neutral chloride environment (3%NaCl). The tannins extract was obtained from the green rind of Aloe vera by maceration process method. The major compound of the TAV is Linolenic acid (16.59%). The study of the tannins extract from Aloe vera (TAV) was carried out by coupling gravimetric and electrochemical (stationary and transitory) methods, namely the plot of the polarization curves and electrochemical impedance diagrams. Surface analysis of bronze samples was performed using an SEM (scanning electron microscope) coupled to EDS (energy dispersive X-ray spectroscopy), which helped to highlight the protective effect of the TAV studied. The experimental results obtained allowed to note that the inhibition efficiency reaches 89% at 150 ppm of TAV in 3%NaCl. This inhibitor acts by modifying the mechanism of the processes involved at the interface Bronze/3%NaCl.
Keywords :
3% NaCl , TAV , Corrosion inhibition , Bronze B66 , Aloe vera
