Effect of chemical composition on corrosion and wear behaviour of the composite Ni–Fe–Al2O3 coatings

The nickel, metallic Ni–Fe and composite Ni–Fe–Al2O3 electrodeposited coatings have been investigated for mean iron content in metallic matrix up to 41 wt.%, the mean size of aluminium oxide particles between 0.5 and 5 μm, and mean content of Al2O3 particles in range 104–106 mm−2. The various properties have been investigated: chemical composition of coatings, adhesion, thickness, hardness, roughness, corrosion properties and wear resistance. The significant and differentiated effects of coating composition, including those of iron content, alumina content and alumina size, have been confirmed by multiple regression analysis.