PROPRIETES MECANIQUES ET ANTICORROSIVES DES REVETEMENTS ELECTRODEPOSES A BASE DE NICKEL RENFORCES PAR DES NANOPARTICULES DE TIO2

Abstract

The need for improved the coatings with better properties has developed the requirement for the use of composite electrodeposits, by embedding solid particles in the structure of nickel, such as titanium oxide (TiO2) which is a hard compound, chemically stable and irreducible. The objective of this work is the characterization of the composite deposits nickel titanium on mild steel substrate E 34. These deposits are obtained from watts bath of electrodeposition chlorinated. The characterization has been carried out by XR diffraction and scanning electronic microscopy SEM for the structural and morphological characterization. Mechanical measurements and corrosion tests in a 3,5 % NaCl solution are used to confirm the riability of the deposited films. The techniques used are the weight loss and polarization. The results have revealed a higher corrosion resistance of the composite deposits.