Preparation and Characterization of the Cr-Nanodiamonds/MoN Coatings with Performant Mechanical Properties

This paper presents the results of a study on preparation and characterization Cr-DND/MoN detonation chromium-nanodiamond coating deposited cemented tungsten carbide (WC–3 wt.% Co) mill blades using Arc-PVD electrodeposition methods. The physical mechanical characteristics coatings were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), XRD analysis, Raman spectroscopy, micro-identification, scratch test (evaluation adhesion). It was shown that consists successive layers Cr-DND (top), Cu (middle) MoN (bottom) with separate phases γ-Mo2N, α-Mo, α-Cu, nanodiamonds. composite electrochemical (CEC) from conventional chromium plating electrolyte addition copper interlayer method surface to improve adhesion strength CEC. showed an optimum microhardness about 14 ± 1 GPa good critical load Lc 93 N. In expected experimental results, has high wear resistance, confirmed tests.