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A comparative AFM study of carbon alloyed Mo–Se–C and W–S–C films for tribological applications

  • A. Tomala , I. C. Gebeshuber , A. Pauschitz and M. Roy
Published/Copyright: May 18, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 101 Issue 7

Abstract

Transition metal dichalcogenides have a layered structure and are therefore promising self-lubricating films. They can be considered as potential substitutes for carbon based films in various environmental conditions. In this work, a comparative atomic force microscopy study of co-sputtered Mo–Se–C and W–S–C films is performed to evaluate their nanotribological performances. Both films are alloyed with carbon. The microstructural features of these films are characterised using scanning electron microscopy and X-ray diffraction. The hardness and elastic modulus of these films are measured employing nanoindentation. The topography, friction forces and pull off forces of the films are evaluated by means of atomic force microscopy and force spectroscopy. The results show that the roughness parameters of Mo–Se–C films are lower than that of W–S–C films at high carbon content whereas the reverse is true at low carbon content. Adhesion forces of these films based on pull-off force measurements show that Mo–Se–C films have higher pull off forces than W–S–C films. An atomic force microscopy technique is developed to estimate microscopic values of friction coefficients and to characterise the nature of surface changes due to nanotribological experiments. The friction coefficient of Mo–Se–C films is higher than that of W–S–C films at low carbon content and these friction coefficients are comparable at high carbon content.

Keywords: Transition metal dichalcogenides; Nanotribology; AFM study
∗ Prof. Ille C. Gebeshuber, Institut für Angewandte Physik, Technische Universität Wien, Wiedner Hauptstraβe 8–10/134, 1040 Wien, Austria, Institute for Microenergineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia, Tel.: +60 12 392 92 33 (Malaysia)+43 664 350 7654 (Austria), Fax: +60 380 620 183 (Malaysia)+43 158 801 134 99 (Austria), E-mail: ,

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Received: 2009-1-18
Accepted: 2010-4-27
Published Online: 2013-05-18
Published in Print: 2010-07-01

© 2010, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110358
Keywords for this article
Transition metal dichalcogenides; Nanotribology; AFM study

Articles in the same Issue

  1. Contents
  2. Contents
  3. Basic
  4. Thermodynamic modeling of the Pt–Zr system
  5. Experimental investigation and thermodynamic prediction of the Ga–Sb–Sn phase equilibria
  6. Calculation of the viscosity of the liquid ternary Ag–Au–Sn system
  7. Thermophysical properties of liquid tin–bismuth alloys
  8. A comparative AFM study of carbon alloyed Mo–Se–C and W–S–C films for tribological applications
  9. Luminescence of Fe-substituted ZnWO4 powders synthesized by aqueous solution reaction
  10. Electromagnetic radiation during plastic deformation under unrestricted quasi-static compression in metals and alloys
  11. Applied
  12. Microstructure and mechanical properties of Fe3Al–TiC composites
  13. Study of wear behaviour of ductile iron subjected to two step austempering
  14. Effect of annealing on formability and crystallographic textures of aluminium 5052 alloy sheets
  15. The use of fly ash and basaltic pumice as additives in the productionof clay fired brick in Turkey
  16. Insulation properties of bricks made with cotton and textile ash wastes
  17. Effects of homogenizing and aging treatments on the microstructure and microhardness of an Nb-silicide based ultrahigh temperature alloy
  18. Alloys with thermal expansion matching to electrolyte materials for solid oxide fuel cells
  19. Simulation-based study of the compensation coil method applied to ferrite nanometric powders
  20. DGM News
  21. Zum 75. Geburtstag von Prof. Dr.-Ing. habil. Peter Klimanek
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