COMPARISON OF THE PROPERTIES OF NICKEL COATINGS REINFORCED WITH DISPERSION SiC PARTICLES OF MICROMETRIC, SUBMICROMETRIC AND NANOMETRIC SIZE DEPOSITED ON THE 5xxx SERIES ALUMINIUM ALLOY

摘要

In this study, Ni-SiC composite coatings were electroplated on the 5xxx series aluminium alloy substrate. The effect of the quantity (25g/l i 50g/l) and the size (3μm, 0,41 μm and 50nm) of SiC particles introduced into the bath as a dispersed phase on properties of the coatings was tested. The influence of these parameters on thickness, microhardness, surface structure, abrasion resistance and corrosion resistance of nickel composite coatings was determined.