MoS₂ PARTICLES MODIFIED WITH POLYSTYRENE FOR PRODUCING Ni–PS/MoS₂ COATINGS

Abstract

The MoS 2 particles were coated with polystyrene and can be written as PS / MoS 2 hereinafter. Ni – PS / MoS 2 coatings and Ni – MoS 2 coatings were produced by PC electrodeposition technique. The surface morphology of Ni – PS / MoS 2 coating was examined and compared with those of Ni – MoS 2 coating. The effect of particle concentrations on the volume percent of particles incorporated in the coatings was investigated. And the microhardness of coatings was also investigated. Results show that the surface morphology of Ni – PS / MoS 2 coating is regular and the thickness of coating is uniform. The introduction of MoS 2 to coatings caused dendritic growth. The surface morphology of Ni – MoS 2 coating is irregular. With the same particles concentration in bath, the volume percent of PS / MoS 2 particles incorporated in the composite coatings was higher than those of MoS 2 particles; and the microhardness of Ni – PS / MoS 2 coating was higher than those of Ni – MoS 2 coating.