2017
DOI: 10.3762/bjnano.8.189
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Stick–slip boundary friction mode as a second-order phase transition with an inhomogeneous distribution of elastic stress in the contact area

Abstract: This article presents an investigation of the dynamical contact between two atomically flat surfaces separated by an ultrathin lubricant film. Using a thermodynamic approach we describe the second-order phase transition between two structural states of the lubricant which leads to the stick–slip mode of boundary friction. An analytical description and numerical simulation with radial distributions of the order parameter, stress and strain were performed to investigate the spatial inhomogeneity. It is shown tha… Show more

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Cited by 2 publications
(2 citation statements)
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“…These objects with a micro/mesoscale in one dimension and a nanoscale in others may play a role as possible candidates for bridging tribological properties at different length scales. Also mesoscale models for boundary lubrication [ 221 ] may provide hints about how the microscale and the mesoscale may connect. Finally, direct comparison of microfriction and macrofriction measurements conducted with the same materials [ 222 ] may also provide hints to how the sliding regimes on microscale and macroscale can be brought into the same picture.…”
Section: Reviewmentioning
confidence: 99%
“…These objects with a micro/mesoscale in one dimension and a nanoscale in others may play a role as possible candidates for bridging tribological properties at different length scales. Also mesoscale models for boundary lubrication [ 221 ] may provide hints about how the microscale and the mesoscale may connect. Finally, direct comparison of microfriction and macrofriction measurements conducted with the same materials [ 222 ] may also provide hints to how the sliding regimes on microscale and macroscale can be brought into the same picture.…”
Section: Reviewmentioning
confidence: 99%
“…The quality of the surface condition is addressed experimentally by the example of cryogenically treated martensitic stainless steel [ 4 ] and theoretically by an analysis of the influence of micro-dimple textures on hydrodynamic lubrication [ 5 ]. On a more fundamental level, different authors have modeled the influence of electrical double layers on hydrodynamic lubrication [ 6 ], the occurrence of a second-order phase transition in ultrathin lubricant films [ 7 ] and the velocity dependence of dry friction on crystal surfaces at the atomic scale [ 8 ].…”
mentioning
confidence: 99%