Study of Mechanism of Failure and Wear of Multi-Layered Composite Nano-Structured Coating Based on System Ti-TiN-(ZrNbTi)N Deposited on Carbide Substrates

Abstract

The aim of this paper is to study physical and chemical properties of nanostructured multi-layered composite coating based on three-layered architecture of Ti-TiN-(ZrNbTi)N, deposited to a carbide substrate, as well as to study the mechanism of wear and failure of carbide tools with coatings under the conditions of stationary cutting. The coating obtained by the method of filtered cathodic vacuum arc deposition (FCVAD). The microstructure of carbide cubstrate with coating on transverse cross-section were investigated, as well as its hardness, strength of the adhesive bond to the substrate, chemical composition and phase composition. The studies of cutting properties of the carbide inserts with developed coating was conducted on a lathe in longitudinal turning of steel C45 (HB 200). Analysis of mechanisms of coated tool wear and failure was carried out, as well as - the study of processes of diffusion and oxidation in the surface layers of the coated substrate.

Abrasive wear behaviour of nano-TiN coated AISI D3 tool steel

“…Some features of them can be simplified as follows [11]: a) Mechanical properties (e.g tribology, hardness, scratch resistance) b) Thermal and chemical properties (e.g heat resistance and insulation, corrosion resistance) c) Electronically and magnetic properties (e.g magneto resistance, dielectric) d) Biological properties (biocompatibility, anti-infective) Marani et al [12] obtained that the use of nanocoatings in tillage systems has a much lower coefficient of friction and nine times less adhesion than other surfaces like steels. Vereschaka et al [13] obtained that a nanostructured and multi-layered coated tool's life exceeded by 3 times the tool life of an uncoated tool, and by more than 2 times the tool life of a tool with standard coating. In the study by Wang and Lin [14] investigated the performance of nano-TiN coated stainless steel cathodes and obtained that improving electrode performance in electrochemical wastewater treatments.…”

D-shell of iron atom of the amorphous FeCr15B15alloy effective charge change during the crystallization

“…Power transformers and magnetic heads production based on the amorphous metal alloys and Finemet-type alloys, manufactured on their basis, is growing rapidly every year. At the same time, the development of new ways of for obtaining an amorphous state such as gas-phase deposition [1][2][3][4] and selective laser melting [5,6] provides a wider usage of high strength properties of metal glasses. The increase of an amorphous alloys temperature stability leads to a broadening their application range, including the using as a covering for cutting tools [7][8][9].…”

“…An important advantage, in this case is the absence of crystal structure that makes it possible [13][14][15][16] for them to serve as a transition layer between the substrate and the nanostructured covering, damping the difference between crystal structures of the substrate and the covering, and the difference between their thermal expansion coefficients. In many cases, these processes lead to destroying, cracking and chipping of the covering [3][4][5].…”

Phase composition and microstructure of WC–Co alloys obtained by selective laser melting

“…One of the examples of work with refractory materials by the SLM method is the obtaining of WC-Co bulk alloys [8,9]. WCCo alloys are widely used in industry as cutting tools [10,11] including tools with multilayer coatings [12,13], and also can be used as wear-resistant bulk materials [14], wearresistant [15] and anticorrosion coatings [16].…”