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  4. Effect of mechanochemically functionalized multilayer graphene on the tribological properties of silicon carbide/graphene nanocomposites in aqueous environment
 
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2018
Journal Article
Titel

Effect of mechanochemically functionalized multilayer graphene on the tribological properties of silicon carbide/graphene nanocomposites in aqueous environment

Abstract
Dry milling of graphite in a ball mill represents a versatile one-step mechanochemical process for fabricating mechanochemically functionalized multilayer graphene (MG) bearing different functional groups. The variation of the milling parameters enables to control particle size, shape, functionality, specific surface area, and dispersability of the MG functional fillers. In this study, MG was used as functional nanofiller for the production of SiC/MG nanocomposites. The nanocomposites exhibit significantly improved tribological behavior. The results of rotating pin on disc sliding tests show that with SiC/MG a noticeable improvement of friction and wear behavior under water-lubricated conditions like in slide bearings and face seals can be achieved. Sliding friction systems with the variant SiC + 2% MGCO2-120 h appear to have the most promising tribological properties, due to the reduced size of the homogeneously distributed graphite particles, which promote the formation of advantageous surface states.
Author(s)
Zhang, W.
University of Freiburg
Schröder, C.
Fraunhofer-Institut für Werkstoffmechanik IWM
Schlüter, B.
Fraunhofer-Institut für Werkstoffmechanik IWM
Knoch, M.
FCT Ingenieurkeramik GmbH, Frankenblick, Germany
Dusza, J.
Slovak Academy of Sciences, Koice, Slovakia
Sedlak, R.
Slovak Academy of Sciences, Koice, Slovakia
Mülhaupt, R
University of Freiburg
Kailer, A.
Fraunhofer-Institut für Werkstoffmechanik IWM
Zeitschrift
Tribology letters
Project(s)
ERA.NET-GRACE
Funder
Bundesministerium für Bildung und Forschung BMBF (Deutschland)
DOI
10.1007/s11249-018-1074-2
File(s)
N-521503.pdf (1.37 MB)
Language
English
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Fraunhofer-Institut für Werkstoffmechanik IWM
Tags
  • silicon carbide

  • graphene

  • nanocomposite

  • mechanochemistry

  • tribology

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