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Tribological Behavior of Very Thin Confined Films

Published online by Cambridge University Press:  21 March 2011

M. H. Müser*
Affiliation:
Institut für Physik, WA 331 Johannes Gutenberg-Universitäat Mainz 55099 Mainz, Germany
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Abstract

The tribological properties of two smooth surfaces in the presence of a thin confined film are investigated with a generic model for the interaction between two surfaces and with computer sim- ulations. It is shown that at large normal contact pressures, an ultra thin film automatically leads to static friction between two flat surfaces - even if the surfaces are incommensurate. Commen- surability is nevertheless the key quantity to understand the tribological behavior of the contact. Qualitative differences between commensurate and incommensurate contacts remain even in the presence of a thin film. The differences mainly concern the thermal diffusion of the contact and the transition between smooth sliding and stick-slip.

Type
Research Article
Copyright
Copyright © Materials Research Society 2001

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