Metal carbide/amorphous C-based nanocomposite coatings for tribological applications

J. C. Sánchez-López*, D. Martínez-Martínez, M. D. Abad, A. Fernández

*Autor correspondiente de este trabajo

Producción científica: Artículo en revista indizadaArtículorevisión exhaustiva

81 Citas (Scopus)

Resumen

This paper tries to assess the factors governing the tribological behaviour of different nanocomposites films composed by metallic carbides (MeC) mixed with amorphous carbon (a-C). Different series of MeC/a-C coatings (with Me: Ti(B) and W) were prepared by magnetron sputtering technique varying the power applied to the graphite target in order to tailor the carbon content into the films. A deep investigation of the chemical and structural features at the nano-scale is carried out by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron energy-loss spectroscopy (EELS) and Raman spectroscopy techniques in order to establish correlations with the tribological properties measured by a pin-on-disk tribometer in ambient air. The analysis of the counterfaces by Raman confocal microscopy after the friction tests is used to follow the chemical phenomena occurring at the contact area responsible of the observed friction behaviour. The importance of determining the fraction of C atoms in the amorphous phase (xa-C) is highlighted as a key-parameter to control the tribological properties. A comparative analysis of the mechanical and tribological performance of the three systems (TiC/a-C, WC/a-C, TiBC/a-C) is done and conclusions are obtained concerning the friction and wear mechanism involved.

Idioma originalInglés
Páginas (desde-hasta)947-954
Número de páginas8
PublicaciónSurface and Coatings Technology
Volumen204
N.º6-7
DOI
EstadoPublicada - 25 dic 2009
Publicado de forma externa
EventoThe 36th International Conference On Metallurgical Coatings And Thin Films ICMCTF 2009, San Diego, USA (April 27 - May 1, 2009). - San Diego, Estados Unidos
Duración: 1 ene 2009 → …

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