Non-Amontons behavior of friction in single contacts - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue European Physical Journal E: Soft matter and biological physics Année : 2006

Non-Amontons behavior of friction in single contacts

Résumé

We report on the frictional properties of a single contact between a glassy polymer lens and a flat silica substrate covered either by a disordered or by a self-assembled alkylsilane monolayer. We find that, in contrast to common belief, the Amontons proportionality between frictional and normal stresses does not hold. Besides, we observe that the velocity dependence of the sliding stress is strongly sensitive to the structure of the silane layer. Analysis of the frictional rheology observed on both disordered and self-assembled monolayers suggests that dissipation is controlled by the plasticity of a glass-like interfacial layer in the former case, and by pinning of polymer chains on the substrate in the latter one.
Fichier principal
Vignette du fichier
BP2.pdf (290.24 Ko) Télécharger le fichier
Loading...

Dates et versions

hal-00010184 , version 1 (10-10-2005)

Identifiants

Citer

Lionel Bureau, Tristan Baumberger, Christiane Caroli. Non-Amontons behavior of friction in single contacts. European Physical Journal E: Soft matter and biological physics, 2006, 19, pp.163. ⟨10.1140/epje/e2006-00019-2⟩. ⟨hal-00010184⟩
61 Consultations
114 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More