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Investigation of the Mechanical Properties of Al2O3 Reinforced Nickel Composite Coatings

Yılmaz, Olgun
Erdoğan, Metehan
Karakaya, İshak
Addition of inert ceramic particles improves the mechanical and tribological properties of nickel coatings significantly. Two different surfactants; ammonium lignosulfonate (ALS) and sodium dodecyl sulfate (SDS), were used in a typical sulfamate nickel plating solution in varying concentrations to arrange the floatation and wetting conditions of Al<SUB>2</SUB>O<SUB>3</SUB> particles (~300 nm) in the electrolyte. In addition to the effect of surfactants, effects of current density and the amount of Al<SUB>2</SUB>O<SUB>3</SUB> powder in the electrolyte on the mechanical and tribological properties like hardness, friction coefficient, wear rate, and the amount of deposited Al<SUB>2</SUB>O<SUB>3</SUB> were investigated.