(Ti,W,Cr)B2 coatings produced by dc magnetron sputtering

Newirkowez, Aleksandra; Cappi, B.; Telle, Rainer; Schmidt, Harald

doi:10.1016/j.tsf.2011.08.071

Cited by 6 publications

(14 citation statements)

References 18 publications

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“…Only long term anneals for several tens of hours leads to the formation of crystalline precipitates. However, no boride phases are found as expected from preliminary work, where coatings of the same composition and with the same sputter parameters were deposited on silicon substrates [27]. Instead, strong reflections of a cubic TiC phase (Fm-3m) [29] with a lattice parameter of a = (4.283 ± 0.005) Å occur.…”

Section: Resultssupporting

confidence: 52%

“…The coatings were deposited by dc magnetron sputtering using sputter targets of composition (Ti 0.49 W 0.51 )B 1.97 and (Ti 0.44 W 0.30 Cr 0.26 )B 1.95 [27]. The chemical composition of the targets was measured by inductively coupled plasma-optical emission spectroscopy.…”

Section: Methodsmentioning

confidence: 99%

“…at 300 K), low electric resistivity (~0.13 µΩ·m), a relatively low density (4.5 g/cm 3 ), excellent chemical stability, and a high hardness (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) GPa) [1][2][3][4][5][6][7]. Materials based on titanium diboride are in use as cutting tools, wear resistant parts, protective coatings, diffusion barriers, and for a reinforcement of carbide ceramics [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…These precipitates lead to crack deflection and branching [26]. Concerning thin films, it was recently shown [27] that it is possible to deposit (Ti,W,Cr,)B 2 coatings with a thickness of about 1 µm on silicon substrates by DC magnetron sputtering of compound targets. X-ray diffractometry and electron microscopy characterizations show the presence of a columnar amorphous structure after deposition.…”

Section: Introductionmentioning

confidence: 99%

“…Annealing the coatings at temperatures up to 1300 °C results in the formation of nano-crystalline precipitations composed of (Ti,W,Cr)B 2 (P6mmm), β-(W,Ti,Cr)B (Cmcm) and W 2 B 4 (P6mmc) phases. The aim of the present paper is to compare the thermally induced microstructural modifications in coatings of composition (Ti 0.49 W 0.51 )B 2 and (Ti 0.44 W 0.30 Cr 0.26 )B 2 which are deposited on steel substrates to those sputtered on silicon substrates as given in [27]. Heat treatments are applied in order to induce formation of a nano-crystalline structure and to tailor grain diameters.…”

Section: Introductionmentioning

confidence: 99%

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Microstructural Evolution of (Ti,W,Cr)B2 Coatings Deposited on Steel Substrates during Annealing

et al. 2014

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Abstract:The topic of the present experiments are transition metal diboride coatings of composition (Ti 0.49 W 0.51 )B 2 and (Ti 0.44 W 0.30 Cr 0.26 )B 2 . The coatings were deposited on steel substrates using dc magnetron sputtering. We investigated how annealing in argon at elevated temperatures modifies microstructure. The as-deposited films are amorphous. Annealing between 700 and 1100 °C results in the formation of nano-crystalline precipitates with average grain diameters of about 10-50 nm. A TiC phase (Fm-3m; a ≈ 4.3 Å) is observed as the dominating precipitate phase. In addition, small amounts (10%-20%) of a Cr 23 C 6 phase (Fm-3m; a ≈ 10.6 Å) are observed. In contrast to literature data on the same coatings deposited on silicon substrates, the formation of boride precipitate phases is strongly suppressed here. From investigations with X-ray diffractometry, electron microscopy and secondary ion mass spectrometry we conclude that the nanostructure of the coatings is formed by reactive phase formation of the boride coating with the carbon containing steel substrate.

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Section: Resultssupporting

confidence: 52%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microstructural Evolution of (Ti,W,Cr)B2 Coatings Deposited on Steel Substrates during Annealing

et al. 2014

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Effect of chromium doping on the structure and mechanical properties of anti-wear TiB2 coatings

Cieniek

Chudzik-Poliszak

Moskalewicz

et al. 2023

Archiv.Civ.Mech.Eng

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TiB2-based coatings have been intensively developed due to their physical and mechanical properties, including excellent thermal stability and high hardness with good abrasion and corrosion resistance, which appear to be the most beneficial in industrial application. Previous investigations have shown that doping TiB2 with W, Ni and C can significantly reduce residual stresses and improve adhesion, making these coatings ideal on tools to machining aluminum alloys. The aim of this study was to analyze the effect of an Cr interlayer on the durability (adhesion) of the fabricated Ti1−xCrxB2 (x = 0; 0.03; 0.06; 0.10) films and determine the influence of Cr on their microstructure and mechanical properties. The structural characterization of Ti1−xCrxB2 coatings was carried out using X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and atomic force microscopy. To investigate the mechanical properties, nano-scratch and—hardness tests (NST, NHT) were performed, and fracture toughness of the substrate layer systems was determined. The use of an adhesive layer of pure Cr increased the adhesion of the coatings to the substrate. It is shown that the changes in Cr content not only affect the microstructure, mainly by decreasing the crystallite size (column width), but also the texture (preferred film orientation) and phase composition. The addition of chromium also has an effect on the mechanical properties of TiB2 films by reducing their hardness and Young’s modulus and increasing their fracture toughness (KIC).

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The improvement of boron treatment efficiency and electrical conductivity of AA1070Al achieved by trace Ti assistant

Cui

et al. 2018

Journal of Alloys and Compounds

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(Ti,W,Cr)B2 coatings produced by dc magnetron sputtering

Cited by 6 publications

References 18 publications

Microstructural Evolution of (Ti,W,Cr)B2 Coatings Deposited on Steel Substrates during Annealing

Microstructural Evolution of (Ti,W,Cr)B2 Coatings Deposited on Steel Substrates during Annealing

Effect of chromium doping on the structure and mechanical properties of anti-wear TiB2 coatings

The improvement of boron treatment efficiency and electrical conductivity of AA1070Al achieved by trace Ti assistant

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