Modification of nanoparticle absorption using Sodium dodecyl sulfate addition in composite plating bath

The aim of this research is to compare nickel-alumina nanocomposite coatings. The content of alumina nanoparticles has the most important effect in these coatings. In this research, the electrolyte composition was modified by adding Sodium dodecyl sulfate (SDS). The concentration of alumina nanoparticles in the plating bath was 3 grams per liter. In this research, nickel-alumina nanocomposite coating was created by pulsed electric current and under ultrasonic turbulence in electroplating baths. Two nickel plating baths with the combination of watt with the addition of SDS and without SDS were used to create coatings, and before plating, the zeta potential of alumina nanoparticles was measured in two different baths. After the plating process, the cross section of the coatings and the amount of alumina nanoparticles incorporated in the coating and the morphology of each coating were analyzed by a scanning electron microscope (SEM) equipped with an Energy Dispersive x-ray Spectroscopy (EDS). The results showed that by increasing the SDS to the Watt’s solution, the zeta potential of nanoparticles increases from negative 2 mV to positive 42.5 mV and subsequently, the content of alumina reinforcing nanoparticles in the coatings increases from 2.6% by volume percentage to 3.5% Volume percentage. It seems that the SDS may be able to act as a proper surfactant and affect the hydrated layer on the nanoparticles and improve the co-deposition of alumina nanoparticles with nickel in the composite coatings.

Modification of nanoparticle absorption using Sodium dodecyl sulfate addition in composite plating bath Keywords:

Electroplating , Nanocomposite , Plated coatings , Sodium dodecyl sulfate (SDS)