• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Artikel
  4. Experimental and numerical atomistic investigation of the third body formation process in dry tungsten/tungsten-carbide tribo couples
 
  • Details
  • Full
Options
2013
Journal Article
Title

Experimental and numerical atomistic investigation of the third body formation process in dry tungsten/tungsten-carbide tribo couples

Abstract
The third body in tungsten/tungsten-carbide sliding systems is studied using a combination of experiments and atomistic simulations. Ex situ X-ray photoelectron spectroscopy and focused ion beam analysis of the structural and chemical changes near the surfaces reveals that sliding of tungsten against tungsten-carbide results in plastic deformation of the W surface, leading to grain refinement, and the formation of a mechanically mixed amorphous layer on the WC counter body. Molecular dynamics simulations of W/WC sliding couples exhibit the formation of a nanoscale amorphous W/WC interface. The infrequent occurrence of atomic jamming events in the interface resulted in the emission of dislocations into the W bulk and the generation of amorphous shear bands in the WC counter body in agreement with the different third bodies observed in W and WC after the experiments.
Author(s)
Stoyanov, P.
Romero, P.A.
Jaervi, T.
Pastewka, L.
Scherge, M.
Stemmer, P.
Fischer, A.
Dienwiebel, M.
Moseler, M.
Journal
Tribology letters  
Project(s)
Topography Evolution  
Funder
Deutsche Forschungsgemeinschaft DFG  
Deutsche Forschungsgemeinschaft DFG  
Deutsche Forschungsgemeinschaft DFG  
European Commission EC  
DOI
10.1007/s11249-012-0085-7
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • tungsten

  • tungsten-carbide

  • third body

  • amorphization

  • mechanical mixing

  • molecular dynamics

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024