Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Die Rolle der Phasenumwandlung beim Verschleiß von DLC Schichten

 
: Blug, B.; Hörner, M.; Pastewka, L.; Moser, S.; Moseler, M.; Meier, S.

Gesellschaft für Tribologie, Moers:
Reibung, Schmierung und Verschleiß. Forschung und praktische Anwendungen. Bd.1: Werkstoffe und Werkstofftechnologien, Dünne Schichten und Oberflächentechnologien, Schmierstoffe und Schmierungstechnik : 49. Tribologie-Fachtagung, 22. bis 24. September 2008 in Göttingen
Aachen: GfT, 2008
ISBN: 978-3-00-025676-9
S.8/1-8/14
Tribologie-Fachtagung <49, 2008, Göttingen>
Deutsch
Konferenzbeitrag
Fraunhofer IWM ()
diamantähnliche Kohlenstoffschicht; DLC-Schicht; a-C:H Schicht; Einlauf; Phasenumwandlung; molekulardynamische Simulation; Verschleiß

Abstract
The low coefficient of friction and the high wear resistance of DLC coatings is usually attributed to a transfer film on the counter part and a phase transformation within the coating. In ball indentation, sliding and rolling contact experiments the formation of the transfer film, the phase transition and the wear and friction behaviour of a-C:H coatings was examined. The wear increased linear with the time and the initial roughness. The forming of the transfer film seems to be linear as well and is accompanied by a reduction of the sp3 content of the coating within the contact zone. Molecular dynamic simulation show, that the increase in sp2 portion in not due to a grafitisation of the a-C:H, but due to the forming of more amorphous sp2 bondings, which leads to a reduction of interatomic contacts to the counterpart.

: http://publica.fraunhofer.de/dokumente/N-83105.html