Nickel-graphene composite coatings
Benigna Szeptycka, Anna Gajewska-Midzialek
Quarterly No. 2, 2015 pages 107-111
DOI:
keywords: nickel, electrodeposition, composite coatings, graphene
abstract The research on the graphene application for the electrodeposition of nickel composite coatings was conducted. The study assessed the important role of graphene in the increased wear resistance of these coatings. A Watts type nickel plating bath with a low concentration of nickel ions, organic addition agents and graphene as dispersed particles was used for deposition of the composite nickel-graphene coatings. The particle contents in the coatings, surface morphology, roughness and microhardness of the coatings were measured. An Amsler testing machine with a block - ring system was used for tribological tests with Lux oil lubrication. The obtained results suggest that the content of incorporated graphen particles increases with an increasing amount of graphen in the plating bath. The application of organic compounds was advantageous. The nickel-graphene coatings produced during the investigation were distinguished by much better tribological properties than the nickel coating. The tested composite coatings had a relative wear resistance from 3.7 to 6.9 times higher in relation to the relative wear resistance of a nickel coating.