Nanocrystalline Ni/Cu multilayer composite coatings
Maria Trzaska, Grzegorz Cieślak
Quarterly No. 1, 2014 pages 50-53
DOI:
keywords: Ni/Cu multilayers, nanocomposites, electrocrystallization
abstract The paper presents the study of multilayer nanocrystalline Ni/Cu coatings produced by the electrocrystallization method on a carbon steel S235JR substrate. Three variants of multilayer nickel/copper coatings of various thicknesses and quantities of the individual layers of nickel and copper were tested. The coating properties were characterized using the following research techniques: X-ray diffraction (XRD), transmission (TEM) and scanning (SEM) electron microscopes, optical microscopy and Vickers microhardness measurements. The paper presents the results of the structure, morphology, surface topography and microhardness measurements of multi-layer nanocrystalline Ni/Cu composite coatings. The produced coatings have a nanocrystalline structure, compact structure, good adhesion to the substrate and a uniform thickness over the entire coated surface. The thickness of the single layers of nickel and copper has an effect on the hardness of the multilayer Ni/Cu composite coatings.