Development of modifying compounds for multilayer nanostructured coatings for cutting tools Online publication date: Fri, 24-Feb-2017
by Alexey A. Vereschaka; Andre D.L. Batako; Anatoly S. Vereschaka; Alexander I. Dodonov
International Journal of Nanotechnology (IJNT), Vol. 14, No. 1/2/3/4/5/6, 2017
Abstract: The subject of this study was to research and develop modified multilayer nanostructured wear-resistant coatings (NWC) for cutting tools. NWC are formed through the innovation process of filtered cathodic vacuum-arc deposition (FCVAD). The processes of FCVAD allow forming NWCs by filtering vapour-ion flow of macro/micro particles in the plasma torch of vacuum arc, using the plasma duct of special structure isolated from the station chamber, when the angle of rotation of the plasma stream is 120°. This work presents the configuration of the system, alongside the influence of process parameters on the output. The topology of the coatings is presented together with the hardness and a comparison between standard physical vapour deposition (arcPVD) and FCVAD coating technologies. Machining tests were undertaken in turning of standard HB200 steel and heat resistant nickel alloy. The results are presented in terms of tool flank wear. It is shown that the application of the NWC secured 2-6 fold extended tool life.
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