The effect of low titanium content on the phase composition, structure, and mechanical properties of magnetron sputtered WB2-TiB2 films

Sоbоl, O. V.; Dub, S. N.; Pogrebnjak, A.D.; Mygushchenko, R. P.; Postelnyk, А. А.; Zvyagolsky, A.V.; Tolmachova, G.N.

doi:10.1016/j.tsf.2018.07.042

Cited by 19 publications

(12 citation statements)

References 36 publications

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“…In the Ti-B-W coating, obtained by the TiB 2 coating doped with 10% tungsten, one can observe a compact columnar structure with the individual columns, which are agglomerates of equiaxed grains with a diameter ≈100 nm. This allows us to make conclusions regarding the possible occurrence of nano-composite microstructure in Ti-B-W (10%) coatings, which was confirmed by the results of the research presented by Sobol et al [16]. In Figure 6e, the authors presented a scheme of the Ti-B-W (10%) coating microstructure, where the cracking process is not oriented, but indicates the possibility of energy dissipation during cracking.…”

Section: Discussionsupporting

confidence: 80%

The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering

et al. 2020

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In this work, the authors present the possibility of characterization of the fracture toughness in mode I (KIC) for TiB2 and TiB2 coatings doped with different concentration of W (3%, 6% and 10%). The Young’s modulus, hardness and fracture toughness of this coatings are extracted from nanoindentation experiments. The fracture toughness was evaluated using calculation of crack length measurement. An important observation is that increasing tungsten concentration in the range 0–10% changes the microstructure of the investigated coatings: from columnar structure for TiB2 coating to nano-composite structure for Ti-B-W (10%) coating. It can be concluded that doping with concentration 10 at.% W causes an increase of the fracture toughness for the tested coatings.

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Section: Discussionsupporting

confidence: 80%

The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering

et al. 2020

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“…The films/coatings of transition metal ternary borides were deposited using various techniques. The most commonly used technique for depositing ternary transition boride films is magnetron sputtering in which either one target prepared from mixture of respective elemental or binary boride powders [28][29][30], or co-deposition of two targets each prepared only by one of the binary borides which are constituents of the deposited film [31][32][33][34][35][36][37] are used. In the latter case, the units equipped with two magnetrons are suitable for the "dual" deposition process (figure 13).…”

Section: Methods For Deposition Of Ternary Transition Metal Boride Fi...mentioning

confidence: 99%

“…The films in Ti-W-B system with different C Ti -to-C W ratio were studied in [28,29,31,33]. In [33], the effect of tungsten addition on the microstructure and properties of the Ti 𝑥 W 1−𝑥 B 2 thin films was studied.…”

Section: Structurementioning

confidence: 99%

Structure and properties of the films based on ternary transition metal borides: theory and experiment

Onoprienko¹,

Иващенко²,

Шевченко³

2023

Condens. Matter Phys.

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“…The greatest effect of improving the properties when using this approach was the creation of ceramic-like coatings on the surface. Such coatings with high properties are based on nitrides [9,10], borides [11,12] and oxides [13,14] of transition metals, both in the form of single-layer [15,16] and multilayer [17,18] composites.…”

Section: Introductionmentioning

confidence: 99%

An experimental analysis of the influence of electrolyte compositions, current density and duration of the microarc oxidation process on the structuralphase state and properties of VT31 titanium alloy

Subbotinа

Sоbоl

Belozerov

et al. 2020

EEJET

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It was determined that in an electrolyte containing 1.75 g/L KOH+1 g/L Na 2 SiO 3 +2 g/L NaAlO 2 , with an increase in current density from 15 A/dm 2 to 50 A/dm 2 , the phase composition of the coating changes. In the three-phase state (aluminum titanate, rutile, and amorphous-like phase), with increasing j, instead of an amorphous-like phase, a crystalline mullite phase appears. The hardness of the coating increases from 5400 MPa to 12500 MPa. It was found that, in combination with aluminum titanate, mullite is the basis for achieving high hardness in the coating. The formation of a ceramic micro-arc oxide coating on the surface of the VT3-1 titanium alloy makes it possible to reduce the dry friction coefficient by more than 5 times to f=0.09. The effect of electrolysis conditions during micro-arc oxidation of the VT3-1 alloy (titaniumbased) on the growth kinetics, surface morphology, phase-structural state, and physical and mechanical characteristics (hardness, coefficient of friction) of oxide coatings was studied. It was found that the process in the mode of micro-arc discharges is stably implemented on the VT3-1 alloy in an alkaline (KOH) electrolyte with additions of sodium aluminate (NaAlO 2) and liquid glass (Na 2 SiO 3). This makes it possible to obtain coatings up to 250 μm thick. In this case, a linear dependence of the coating thickness on the time of the MAO process is observed. The growth rate of the coating increases with increasing current density. The highest growth rate was 1.13 μm/min. It was revealed that in an electrolyte containing 1 g/L KOH+14 g/L NaAlO 2 with an increase in the duration of oxidation from 60 to 180 minutes, the relative content of the high-temperature phase, rutile, increases. In the coatings obtained in the electrolyte 1.75 g/L KOH+1 g/L Na 2 SiO 3 +2 g/L NaAlO 2 , with an increase in the duration of the MAO process, the relative content of the amorphous-like phase decreases and the content of the crystalline phase of mullite (3Al 2 O 3. 2SiO 2)

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The effect of low titanium content on the phase composition, structure, and mechanical properties of magnetron sputtered WB2-TiB2 films

Cited by 19 publications

References 36 publications

The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering

The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering

Structure and properties of the films based on ternary transition metal borides: theory and experiment

An experimental analysis of the influence of electrolyte compositions, current density and duration of the microarc oxidation process on the structuralphase state and properties of VT31 titanium alloy

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The effect of low titanium content on the phase composition, structure, and mechanical properties of magnetron sputtered WB2-TiB2 films

Cited by 19 publications

References 36 publications

The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering

The Analysis of Resistance to Brittle Cracking of Tungsten Doped TiB2 Coatings Obtained by Magnetron Sputtering

Structure and properties of the films based on ternary transition metal borides: theory and experiment

An experimental analysis of the influence of electrolyte compositions, current density and duration of the micro­arc oxidation process on the structural­phase state and properties of VT3­1 titanium alloy

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An experimental analysis of the influence of electrolyte compositions, current density and duration of the microarc oxidation process on the structuralphase state and properties of VT31 titanium alloy