Author/Authors :
Boubekraoui, Hanane Laboratory of Engineering and Applied Technologies - School of Technology, Beni Mellal, Morocco , Forsal, Issam Laboratory of Engineering and Applied Technologies - School of Technology, Beni Mellal, Morocco , Ellaite, Mohammed Laboratory of Engineering and Applied Technologies - School of Technology, Beni Mellal, Morocco , Benbouya, Khalid Laboratory of Bioprocess and Biointerface - University Sultan Moulay Slimane - faculty of Sciences and Technologies, Beni Mellal, Morocco , Hanin, Hafida Laboratory of Bioprocess and Biointerface - University Sultan Moulay Slimane - faculty of Sciences and Technologies, Beni Mellal, Morocco
Abstract :
The essential oil of Lavandula intermedia Walberton's Silver Edge (LAV) has been
studied as a carbon steel corrosion inhibitor in 1 M hydrochloric acid using electrochemical
obstacle spectroscopy (EIS), Tafel's polarization methods. The effect of extract concentration
of (LAV) and immersion time on inhibition efficacy were studied. The effect of immersion
time on the effectiveness of steel corrosion inhibition in 1M HCl was also studied in the 0.5 –
12 hour time interval. The results revealed that the essential oil of (LAV) tested reduces the
kinetic process of the corrosion process of steel in medium 1 M HCl. Its efficiency increases
with concentration and reaches a maximum value of 84% to 1% of LAVs. This corrosion
inhibition effect attributed to was associated with the formation of a protective film provided
to the metal surface by the complex chemical constituents of the oil extracted from (LAV),
which is confirmed by surface analysis by scanning electron microscopy spectroscopy (SEM).
Keywords :
Lavandula intermedia Walberton's Silver Edge , Carbon steel , Green Corrosion inhibition , Electrochemical Studies
