Wear resistant multilayer nanocomposite WC1-x/C coating on Ti-6Al-4V titanium alloy

W. Pawlak, K. J. Kubiak, B. G. Wendler, T. G. Mathia

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A significant improvement of tribological properties on Ti-6Al-4V has been achieved by developed in this study multilayer treatment method for the titanium alloys. This treatment consists of an intermediate 2 μm thick TiCxNy layer which has been deposited by the reactive arc evaporation onto a diffusion hardened material with interstitial O or N atoms by glow discharge plasma in the atmosphere of Ar+O2 or Ar+N2. Subsequently, an external 0.3 μm thin nanocomposite carbon-based WC1-x/C coating has been deposited by a reactive magnetron sputtering of graphite and tungsten targets. The morphology, microstructure, chemical and phase compositions of the substrate material after treatment and coating deposition have been investigated with use of AFM, SEM, EDX, XRD, 3D profilometry and followed by tribological investigation of wear and friction analysis. An increase of hardness in the diffusion treated near-surface zone of the Ti-6Al-4V substrate has been achieved. In addition, a good adhesion between the intermediate gradient TiCxNy coating and the Ti-6Al-4V substrate as well as with the external nanocomposite coating has been obtained. Significant increase in wear resistance of up to 94% when compared to uncoated Ti-6Al-4V was reported. The proposed multilayer system deposited on the Ti-6Al-4V substrate is a promising method to significantly increase wear resistance of titanium alloys.

LanguageEnglish
Pages400-406
Number of pages7
JournalTribology International
Volume82
Issue numberPart B
Early online date7 Jul 2014
DOIs
Publication statusPublished - Feb 2015
Externally publishedYes

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titanium alloys
Titanium alloys
Nanocomposites
nanocomposites
Multilayers
Wear of materials
coatings
Coatings
Substrates
wear resistance
Wear resistance
Tungsten
Profilometry
Graphite
Reactive sputtering
Glow discharges
Phase composition
glow discharges
Magnetron sputtering
Energy dispersive spectroscopy

Cite this

Pawlak, W. ; Kubiak, K. J. ; Wendler, B. G. ; Mathia, T. G. / Wear resistant multilayer nanocomposite WC1-x/C coating on Ti-6Al-4V titanium alloy. In: Tribology International. 2015 ; Vol. 82, No. Part B. pp. 400-406.
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Wear resistant multilayer nanocomposite WC1-x/C coating on Ti-6Al-4V titanium alloy. / Pawlak, W.; Kubiak, K. J.; Wendler, B. G.; Mathia, T. G.

In: Tribology International, Vol. 82, No. Part B, 02.2015, p. 400-406.

Research output: Contribution to journalArticle

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AU - Pawlak, W.

AU - Kubiak, K. J.

AU - Wendler, B. G.

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AB - A significant improvement of tribological properties on Ti-6Al-4V has been achieved by developed in this study multilayer treatment method for the titanium alloys. This treatment consists of an intermediate 2 μm thick TiCxNy layer which has been deposited by the reactive arc evaporation onto a diffusion hardened material with interstitial O or N atoms by glow discharge plasma in the atmosphere of Ar+O2 or Ar+N2. Subsequently, an external 0.3 μm thin nanocomposite carbon-based WC1-x/C coating has been deposited by a reactive magnetron sputtering of graphite and tungsten targets. The morphology, microstructure, chemical and phase compositions of the substrate material after treatment and coating deposition have been investigated with use of AFM, SEM, EDX, XRD, 3D profilometry and followed by tribological investigation of wear and friction analysis. An increase of hardness in the diffusion treated near-surface zone of the Ti-6Al-4V substrate has been achieved. In addition, a good adhesion between the intermediate gradient TiCxNy coating and the Ti-6Al-4V substrate as well as with the external nanocomposite coating has been obtained. Significant increase in wear resistance of up to 94% when compared to uncoated Ti-6Al-4V was reported. The proposed multilayer system deposited on the Ti-6Al-4V substrate is a promising method to significantly increase wear resistance of titanium alloys.

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