Author/Authors :
Abbout, Said Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco , Chellouli, Mohamed Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco , Zouarhi, Meryem Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco , Benzidia, Bouchra Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco , Hammouch, Hind Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco , Chebabe, Driss Laboratory of Natural Substances & Synthesis and Molecular Dynamic - Faculty of Sciences and Techniques - University of Moulay Ismail, Morocco , Dermaj, Ahmed Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco , Erramli, Hamid Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco , Bettach, Naima Laboratory of Organic Synthesis - Extraction and Valorization - Faculty of Sciences Aïn-Chock - University Hassan II, Morocco , Hajjaji, Najat Laboratory of Material - Electrochemistry and Environment - Faculty of Sciences - University Ibn Tofail, Morocco
Abstract :
In this study, the effect of the formulation derived from Ceratonia siliqua L, (noted FCSL) as green corrosion inhibitor of iron in solution simulated to the rain water (at pH=3.6) was examined by using the weight loss, the potentiodynamic polarization and the electrochemical impedance spectroscopy measurements. In addition, determination of the physico-chemical indexes of the seeds oil of Ceratonia siliqua L, showed that it is a long chain unsaturated oil. The results indicated that the inhibition efficiency (% IE) of the FCSL formulation increased with increasing both inhibitor concentrations and immersion time. The inhibition efficiency reached a value of 98.6% at 750 ppm of the FCSL formulation. This formulation may be form a filmed and acts as a barrier, which minimize the contact area between metallic surface and corrosive solution. This leads to decrease the oxidation of the iron substrate. The metallic surface, after inhibitor treatment has been observed using SEM coupled with the EDX analysis. The obtained results indicate that the FCSL acts as an excellent mixed-type inhibitor
Keywords :
Corrosion inhibitor , Green formulation , FCSL , Ceratonia Siliqua L , Iron substrate , Rainwater
