Development of modifying compounds for multilayer nanostructured coatings for cutting tools

Abstract

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 with 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 (arc PVD) 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 Keywords: nano-scale multilayer composite coatings; filtered cathodic vacuum-arc deposition; cutting condition; cutting tools. Reference for publisher use onlyBiographical notes: Dr. Alexey A. Vereschaka graduated from Moscow State Technical University STANKIN (Russia) in 1990 as tool production engineer. He successfully obtained his Dr.-Ing. in 2010 and his research interests are in wear-resistant, corrosion-resistant, tribological and modifying coatings. He is engaged in the development of new technologies to improve wear resistance and efficiency of cutting tools (end mills, cutting inserts, HSS tools, carbide and ceramics). He is also researching into the improvement of physical and chemical passivity and biological inertness of coating to improve parts performance in polyfascicular osteosynthesis device in dentistry and joint implants and other critical medical devices. He extends this development to surface modification to improve the resistance and tribological properties of friction pairs. He has published over 100 scientific papers and 2 monographs. -1960s), he began developing arc-PVD technology to improve wear resistance and operational properties of metal-cutting tools. He published more than 300 scientific papers including 8 monographs. He was awarded the State Prize in science for his work on processes and equipment development and the technology for depositing wear-resistance coating on cutting tools. He has supervised over 22 Dr.-Ing. and 4 DSc's in the field of technical sciences of the development of methodology, equipment and technologies for the synthesis of multicomponent nanostructured multilayer coatings for various types of cutting tools.Dr. Alexander I. Dodonov has his first degree in Physics from Lomonosov Moscow State University. He worked for the Institute of Nuclear Physics focusing on the studies of the interaction of accelerated ions with the solid state surface. He has published more than 60 papers on this subject in leading international scientific journals. Subs...