Regensburg 2007 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 20: Poster session
MM 20.29: Poster
Dienstag, 27. März 2007, 14:45–18:00, Poster C
Nanolayered and nanoparticle-dispersed WC/C coatings: frictional and wear behavior — Maik Gubisch1, •Yonghe Liu2, Sven-Erik Wulf1, Thomas Haensel2, Mikhail Kosinskiy2, Lothar Spiess1, and Juergen A. Schaefer2 — 1Institut für Werkstofftechnik und Zentrum für Mikro- und Nanotechnologien, Technische Universität Ilmenau, Germany — 2Institut für Physik und Zentrum für Mikro- und Nanotechnologien, Technische Universität Ilmenau, Germany
The control of friction plays a critical role in the developing of wide scanning-range nanopositioning technology, which usually employs bearings to cover the wide distance. A series of WC/C coatings have been developed for the application on the bearings. They are processed in two kinds of microstructures: nanoscale multilayer of WC and amorphous carbon, and nanoscale crystalline WC particles in an amorphous carbon matrix. In this work, we compared their frictional and wear behaviour measured by a microtribometer, and correlated with the microstructure of the worn tracks and transfer films characterized by SEM, EDS, FIB and TEM. Though the frictional behaviour seems quite similar, the wear resistance of the coatings is quite different. These findings are discussed with the formation and redistribution of the transfer films.