Protection for galvanized steel in 3.0 % NaCl solution by SG/CTAB
In this book, the influence of Sodium Gluconate (SG), Cetyltrimethylammonium Bromide (CTAB) and their mixture on galvanized steel corrosion in 3.0 % NaCl solution was investigated by using electrochemical measurement coupled with Scanning Electron Microscopy (SEM).
The polarization measurements indicated that SG, CTAB and their mixture acted as cathodic-type inhibitors.
Indeed, a synergistic effect was found between SG and CTAB.
In fact, the inhibition efficiency of the mixture reached 94 % at 10-3 M of SG with 2.74×10-5 M of CTAB.
In addition, this inhibition efficiency improved remarkably with immersion time and slightly decreased with temperature.
The SEM observations and energy dispersive X-ray (EDAX) analysis indicated that the surface homogeneity increased with mixture addition.
Finally, the thermodynamic parameters (∆G*a, ∆H*a, ∆S*a) were determined and discussed.
RACHID TOUIR Professor of didactics of chemistry and physics at CRMEF Rabat, Morocco, I have published more than 65 papers in international journals and three patents.
I have presented several conferences.
I am reviewer member in several journals.
I have supervised numerous Ph.D.