Nano-Scale Multi-Layered Coatings for Cutting Tools Generated Using Assisted Filtered Cathodic-Vacuum-Arc Deposition (AFCVAD)

Abstract

The subject of this study were nano-nanoscale multilayer coatings formed using the process of filtered cathodic vacuum arc deposition in assisting high-energy ions of chromium. We used a special emitter (implantor) to generate chromium ions with high energy. Such key parameters of coatings as composition, structure, a thickness, hardness, adhesion in relation to a substrate obtained at various energy of chrome ions have been studied. It is establish the positive change of key properties of coating deposited on carbide inserts WC/CrC/Co, WC / (Co-Re), TiC/TaC/Co at assisted impact of ions Cr at ion acceleration voltage within the range of 10-40 kV. The results of measurement of parameters of coatings with use nanoindentometer are consistent with the X-ray analysis of the stresses in the coating (XSA study). The mechanisms of the effect of modified properties of coatings formed in assisting the filtered cathodic vacuum arc deposition on the properties of the carbide inserts in cutting structural steels and hard-to-cut nickel alloys have confirmed the high efficiency of the deposition process developed coatings and coating compositions.

Filtered cathodic vacuum Arc deposition of nano-layered composite coatings for machining hard-to-cut materials

“…Using this concept of dual nature, functional requirements for coatings for cutting tools were derived to prove the concept of multilayer composite coatings with nanoscale structure [1,4,5,[7][8][9]. This concept of multiple nano-layered composite stipulates that the coatings should be based on two/three components structure consisting of an adhesive underlayer, intermediate layer and the outer wear-resistant layer.…”

“…A new technology based on the filtered cathodic vacuum arc deposition (FCVAD), [3,4,7] was used to deposit the coatings on selected tools. The FCVAD technology allows creating a solid coating adhesion to the substrate, high density and hardness that provides a substantial increase of cutting efficiency.…”

“…In this case, it drastically increases the probability of adhesion between tool material and machined material, which leads to intensive adhesion-fatigue tool wear. This phenomenon is typical for the cutting of hard-to-cut titanium and nickel alloys [1,4,11]. In this context, it should be noted that the use of FCVAD technology for formation of coatings with filtered vapor-ion flow significantly reduce dangerous defects in coatings in the form of macro-and micro droplets and increase coating wear resistance to failure arising from adhesion-fatigue processes at tool contact areas.…”

"Experimental Analysis of Aluminium Alloy Metal Matrix Composite With Tungsten Carbide by in-Situ Method Using Sem "

“…An experimental analysis was done on different MMCs and it was found that metal cracks always prompted for the period of the matrix crossing points and also based on the bonding of the particle [18][19][20][21] . Similarly, Nano mixed materials and lubricants are used as fillers and nano agents in nanocomposites and nano fluids to change the different properties and heat transfer rates in different fields like mechanical, aeronautical, electrical and electronics [22][23][24][25] . Similarly, polymer reinforced nanocomposites with inorganic nanoparticles are much better due to their light weight, homogeneity, low cost and simple physical properties [26][27][28][29] .…”

SYNTHESIS AND CHARACTERIZATION OF TiN, TiAlN AND TiAlN/Si3N4 CHEMICAL NANOCOMPOSITE

“…[16][17][18] Multi ingredients coatings were prepared and the weight of substrate prejudice with various parameters was analyzed and found that the different parameters like hardness, toughness, etc were significantly improved. 19,20 Cutting tools with the ceramic material are having a property of high-speed processing and normally it won't promise the reliability level of cutting process as needed.…”