Effect of adhesion and tribological properties of modified composite nano-structured multi-layer nitride coatings on WC-Co tools life

Abstract

Effect of adhesion and tribological properties of modified composite nanostructured multi-layer nitride coatings on WC-Co tools life http://researchonline.ljmu.ac.uk/id/eprint/9965/ Article LJMU has developed LJMU Research Online for users to access the research output of the University more effectively. Citation (please note it is advisable to refer to the publisher's version if you intend to cite from this work) Vereschaka, A, Aksenenko, A, Sitnikov, N, Migranov, M, Shevchenko, S, Sotova, C, Batako, ADL and Andreev, N (2018) Effect of adhesion and tribological properties of modified composite nano-structured multi-layer nitride coatings on WC-Co tools life. Tribology International, 128. pp. 313-Abstract:The paper presents the results of the comparative tests of carbide samples with multilayered nano-structured coatings based on titanium nitrides (Ti-TiN-(Ti,Cr,Al,Si)N) and zirconium nitrides (Zr-ZrN-(Nb,Zr,Cr,Al)N and Zr-ZrN-(Zr,Al,Si)N). The phase composition and microstructure of these coatings were studied. The scratch test method was applied to study the adhesion bond strength to the substrate and the coating fracture patterns. The tribological parameters of the coated samples were studied at temperatures of 450°C-900 °C. The cutting properties of the tools with the coatings under study were investigated in turning AISI 321 steel. Various coating parameter effects on the cutting tool life were studied.

Influence of the Thickness of Multilayer Composite Nano-Structured Coating Ti–TiN–(Ti,Al,Si)N on the Tool Life of Metal-Cutting Tools and the Nature of Wear

“…To deposit the coatings, a VIT-2 unit was used (developed by IKTI RAN -MSTU STANKIN). One of the specific features of the VIT-2 unit is the use of arc evaporator with filtration of vapor-ion flow (FCVAD) [13][14][15][16][17][18][19][20], which makes it possible to obtain coatings with clearly defined boundaries of nanolayers. Coatings with three-layer architecture proved in [18][19][20] were deposited, and the Hume-Rothery rules [39] were followed to select the proportion of elements in the coating composition.…”

“…One of the specific features of the VIT-2 unit is the use of arc evaporator with filtration of vapor-ion flow (FCVAD) [13][14][15][16][17][18][19][20], which makes it possible to obtain coatings with clearly defined boundaries of nanolayers. Coatings with three-layer architecture proved in [18][19][20] were deposited, and the Hume-Rothery rules [39] were followed to select the proportion of elements in the coating composition. Considering the results of the earlier studies [40][41][42][43][44][45][46], the composition of the wear-resistant (Ti 0.70 ,Al 0.25 ,Si 0.05 )N coating was chosen.…”

“…A sample with the thicker coating (8 μm) showed a longer tool life in nano-impact tests and the longest tool life in milling. The effect of the thicknesses of nano-structured coatings of different compositions on their wear resistance was also considered [13][14][15][16][17][18][19][20] (Ti-TiN-(TiCrAl)N and ZrN-(Zr,Al,Si)N [13,14], Zr-(Zr,Cr)N-CrN and Ti-TiN- Accordingly, with the increase in the thickness of a single layer of coating, its superficial hardness is reduced [1]. It can also be assumed that thin coatings have a higher mechanical strength than thicker coatings.…”

“…A sample with the thicker coating (8 µm) showed a longer tool life in nano-impact tests and the longest tool life in milling. The effect of the thicknesses of nano-structured coatings of different compositions on their wear resistance was also considered [13][14][15][16][17][18][19][20] (Ti-TiN-(TiCrAl)N and ZrN-(Zr,Al,Si)N [13,14], Zr-(Zr,Cr)N-CrN and Ti-TiN-(Ti,Cr,Al)N [15], Ti-TiCN-(Ti,Al)CN and Ti-TiCN-(Ti,Al,Cr)CN [16], Ti-TiN-(TiCrAl)N and Ti-TiN-(Ti,Al,Si)N [17], and (Ti,Al)N-(Zr,Nb)N-CrN [18][19][20]). It was also found that layered nano-structured coatings could have significant advantages compared to single-layer and monolithic coatings.…”

Investigation into Performance of Multilayer Composite Nano-Structured Cr-CrN-(Cr0.35Ti0.40Al0.25)N Coating for Metal Cutting Tools

“…It was anticipated that such a coating would provide a balanced combination of wear resistance, thermostability, resistance to high temperature oxidation, and brittle fracture. The three-layer architecture of the coating was used (adhesive layer-transition layer-wear-resistant layer), and considered in previous works [21][22][23][24][25].…”