Tribological behaviour of titanium carbide/amorphous carbon nanocomposite coatings: From macro to the micro-scale

Sánchez-López, J.C.; Martínez-Martínez, D.; López-Cartés, C.; Fernández, A.

doi:10.1016/j.surfcoat.2008.02.012

Cited by 106 publications

(46 citation statements)

References 37 publications

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“…In order to understand the wear mechanism and the physic-chemical transformation Raman spectroscopy has proven to be a powerful tool to study worn surfaces and define the phase composition of the wear products enabling the elucidation of the friction mechanisms [34][35][36]. Eventually, the presence of CrO 3 is determined by the presence of a peak situated at around 1005 cm -1 [37,40].…”

Section: C) Post-test Analysis Of the Wear Tracksmentioning

confidence: 99%

Tribological behaviour at high temperature of hard CrAlN coatings doped with Y or Zr

et al. 2014

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Section: C) Post-test Analysis Of the Wear Tracksmentioning

confidence: 99%

Tribological behaviour at high temperature of hard CrAlN coatings doped with Y or Zr

et al. 2014

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“…[2,6] The performance of nanocomposite coatings with a low COF is strongly influenced by their micro/nanostructure. [7,8] The micro/nanostructure characterization of thin coatings is essentially a complex task and can be best performed by means of advanced transmission electron microscopy (TEM). Advanced TEM allows precise phase identification in multiphase and/or multilayered materials with a spatial resolution down to the nano-scale.…”

Section: Carbon-based Nanocomposite Coatings Havementioning

confidence: 99%

“…This film is assumed to be composed mainly of graphitelike carbon atom clusters. [4,5,7] The rate of the self-lubricating film formation was greater for the nc-TiC/a-C coating as a result of a greater volume fraction of the amorphous a-C carbon matrix in the coating. Due to that, as well as to a lower hardness of the coating, the contact area during dry friction of this coating underwent faster and easier matching.…”

Section: Tribological Propertiesmentioning

confidence: 99%

Thick Low-Friction nc-MeC/a-C Nanocomposite Coatings on Ti-6Al-4V Alloy: Microstructure and Tribological Properties in Sliding Contact with a Ball

Zimowski

Moskalewicz

Wendler

et al. 2014

Metall Mater Trans A

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In this paper, we show that duplex surface treatment, combining oxygen diffusion hardening with the subsequent deposition of thick, low-friction nanocomposite nc-MeC/a-C coatings to improve the tribological properties of the Ti-6Al-4V alloy. We have synthesized, in a magnetron sputtering process, the nanocomposite nc-MeC/a-C coatings (where Me denotes W or Ti transition metal) consisting of two dissimilar materials (nanocrystallites of transition metal carbides MeC and an amorphous carbon matrix a-C). The nano and microstructure of the substrate material and coatings were examined with the use of scanning and transmission electron microscopy as well as by X-ray diffractometry. It was found that different carbide nanocrystals of the same transition metal were embedded in an amorphous carbon matrix of both coatings. The HRTEM analysis indicated that the volume fraction of tungsten carbides in the nc-WC/a-C coating was equal to 13 pct, whereas in the nc-TiC/a-C one the volume fraction of the titanium carbides was equal to just 3 pct. The tribological properties, hardness, and scratch resistance of the coatings were investigated as well. The coefficient of friction (COF) of the coatings during dry sliding against 6 mm diameter alumina ball reached very low value, 0.05, in comparison with an oxygen-hardened alloy, whose COF was equal to 0.8. This lowfriction effect of the coatings has been attributed to the formation of a self-lubricating film in sliding contact. The coatings exhibited similar failure morphology in the scratch tests. Even though the hardness was rather low, the coatings exhibited a very good wear resistance during sliding friction. The wear rate of the nc-WC/a-C coating was equal to 0.08 9 10 À6 mm 3 N À1 m À1 and for the nc-TiC/a-C one it was 0.28 9 10 À6 mm 3 N À1 m À1 .

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“…The mechanical strength, the electrical and tribological properties of the nanocomposite films are determined by the C/Ti ratio, the relative fraction of the a-C(:H) matrix, and the size of the TiC grains [7,18,19,21,22,23].…”

Section: Introductionmentioning

confidence: 99%

Growth of Ti-C nanocomposite films by reactive high power impulse magnetron sputtering under industrial conditions

Samuelsson

Sarakinos

Högberg

et al. 2012

Surface and Coatings Technology

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Titanium carbide (TiC) films were deposited employing high power impulse magnetron sputtering (HiPIMS) and direct current magnetron sputtering (DCMS) in an Ar-C 2 H 2 atmosphere of various compositions. Analysis of the structural, bonding and compositional characteristics revealed that the deposited films are either TiC and hydrogenated amorphous carbon (a-C:H) nanocomposites, nanocrystalline TiC, or Ti/TiC, depending on the C/Ti ratio.It was found that Ti-C films grown by HiPIMS show a C/Ti ratio of close to 1 for a wide C 2 H 2 flow range (4-15 sccm), with free C ranging from 0 to 20%. Thus, films ranging from near stoichiometric single phase TiC to TiC/a-C:H nanocomposites can be synthesized. This was not the case for DCMS, where films grown using similar deposition rates as for HiPIMS *Manuscript Click here to view linked References 2 formed larger fractions of amorphous C matrix, thus being nanocomposites in the same C 2 H 2 (above 4 sccm) flow range. For a C/Ti ratio of 1 the resistivity is low (4-8×10 2 µΩcm) for the HiPIMS films, and high (>100×10 2 µΩcm) for the DCMS films. The hardness also shows a big difference with 20-27 and 6-10 GPa for HiPIMS and DCMS grown films, respectively.

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Tribological behaviour of titanium carbide/amorphous carbon nanocomposite coatings: From macro to the micro-scale

Cited by 106 publications

References 37 publications

Tribological behaviour at high temperature of hard CrAlN coatings doped with Y or Zr

Tribological behaviour at high temperature of hard CrAlN coatings doped with Y or Zr

Thick Low-Friction nc-MeC/a-C Nanocomposite Coatings on Ti-6Al-4V Alloy: Microstructure and Tribological Properties in Sliding Contact with a Ball

Growth of Ti-C nanocomposite films by reactive high power impulse magnetron sputtering under industrial conditions

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