The realization of the deposits of composite with nickel, on copper substrata, as well as their characterization were made essentially at the level of the Laboratory of electrochemistry, corrosion and environment, Faculty of science, university IBN TOFAIL KENITRA MOROCCO. Knowing that Morocco's largest producer of phosphoric acid in the world. The barrels used for storage and transportation of this product are subject to severe corrosion. For this reason we have sought to develop Ni-P-TiO2 composite coatings on copper substrates. The corrosion resistance of the composite Ni-P-TiO2 composite coatings was estimated in a very aggressive environment 4 mol/L (4M) of H3PO4 by using the techniques of polarization and the spectroscopy of impedance confirmed by those obtained by using non-electrochemical methods (Energy of dispersal of the X-rays and the electronic microscopy with sweeping). The results showed that the incorporation of TiO2 in the cover pulls an increase of the corrosion resistance and the improvement of the morphology of surface.
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