Dresden 2006 – wissenschaftliches Programm
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DS: Dünne Schichten
DS 24: Poster presentation
DS 24.27: Poster
Dienstag, 28. März 2006, 15:00–17:30, P2
Investigation of the normal force dependency of the static friction on the micro-scale — •Maksim Karniychuk1, Thomas Chudoba2, Volker Linss2, and Frank Richter1 — 1Chemnitz University of Technology, Institute of Physics, 09107 Chemnitz, Germany — 2ASMEC Advanced Surface Mechanics GmbH, Bautzner Landstr. 45, 01454 Radeberg, Germany
So far most of the tribological investigations are performed at load and length scales compatible with macroscopic devices. With recently developed techniques such as friction force microscopy (FFM) and different nano-tribological tests it is possible to study the friction on the nano- and micro-scale. In contrast to the investigation of kinetic friction by these new techniques the estimation of static friction is complicated. For the evaluation of the static friction on the micro-scale the lateral force must be applied to small surface areas with high lateral resolution, which can be achieved by a new Lateral Force Unit. Thus, the static friction force and, consequently, static friction coefficient can be determined.
In general the friction depends on adhesion and volume deformation. However, many other factors can influence the friction behavior on the micro-scale. For instance, the effect of the normal force on the kinetic friction was adequately studied on the micro-scale for many materials, for example, by FFM. Now the new device allows additionally investigating the influence of the normal force on the static friction behavior on the micro-scale.