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Structure and properties of polymer-fullerene composite films deposited by a combined process of thermal sublimation and plasma polymerization (Poster)

Abstract zum Poster
: Kiesow, A.; Kailer, A.; Löschner, K.; Heilmann, A.

Verhandlungen der Deutschen Physikalischen Gesellschaft (2005), Nr.2, S.182
ISSN: 0420-0195
ISSN: 0372-5448
Deutsche Physikalische Gesellschaft (Jahrestagung) <69, 2005, Berlin>
Fraunhofer IWM ()
Fullerene; plasma; polymerization; tribology

C60 fullerenes and WS2-fullerene-like molecules are known as promising material to improve the tribological properties of coatings. In order to integrate such nanoparticles in a polymeric matrix the fullerenes are sublimated concurrently to a plasma enhanced chemical vapour deposition (plasma polymerization). Silicon-containing hydrocarbons such as hexamethyldisiloxane were used as monomer. Transmission electron microscopy (also in cross section) and scanning electron microscopy were applied to investigate the microstructure of the films; in particular, the arrangement of the fullerenes within the polymer matrix. The film structure as well as the arrangement of the nanoparticles is influenced by the diposition parameters. FTIR and Raman spectroscopy give information about the chemical properties of the films deposited. The tribological characterization of the coatings were done in reciprocating ball-on-disc and flat pin-on-disc configuration. First results of the tribological tests are compared and discussed concerning friction coefficients, wear rates and mechanisms.