Abstract
Abstract Studies were carried out to characterise the nickel composite coatings deposited on a 2xxx series aluminium alloy. The composite coatings were prepared in a Watts bath with the addition of fine-dispersed particles of Al2O3 powder introduced in an amount of 100 g/l using current densities of 2, 4, 6 and 8 A/dm2. The morphology, structure, thickness and microhardness of the obtained composite coatings were described. The volume fraction of Al2O3 particles in composite coating was determined. The corrosion resistance of thus produced coatings was examined. Based on the results of the conducted studies it was stated that all the produced coatings were characterised by good adhesion to the substrate, but coatings produced at high current densities were characterised by a lower content of the Al2O3 reinforcing phase present in the composite.
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