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Triboactive surfaces in multi-asperity nanotribology

Stempflé, Philippe and Domatti, Anne and Carrière, Pascal and Pantalé, Olivier and Cote, Jean Marc and Takadoum, Jamal Triboactive surfaces in multi-asperity nanotribology. (2015) In: 42nd Leeds-Lyon Symposium on Tribology, 7 September 2015 - 9 September 2015 (Lyon, France).

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Abstract

In this work, n-octadecyltrichlorosilane (OTS) have been grafted on various micro-pillars created by Deep Reactive-Ion Etching (DRIE) of silicon wafers. This multi-architectured surfaces have then been tested with a ball-on-disc nanotribometer CSM Instruments (Fn: 3 mN, ball: Si3N4  1,5 mm) working in linear reciprocating mode, under various environmental conditions. Whereas the pillar's height is always fixed at 10 μm, their shapes and pitches are changed in order to test various wettability models – as Cassie-Baxter or Wenzel ones [4]. The Cassie-Baxter model can be applied in the densest pillars' area while the Wenzel one matches with weakest pillar's area. Since the frictional behavior of OTS monolayers is known to be thermally sensitive, the temperature of the structure is imposed during the tribological test by using a Peltier module.

Item Type:Conference or Workshop Item (Lecture)
Additional Information:Thanks to the 42nd Leeds-Lyon Symposium on Tribology editor.
HAL Id:hal-01255387
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Ecole Nationale Supérieure de Mécanique et des Microtechniques - ENSMM (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université de Franche-Comté (FRANCE)
Other partners > Université du Sud Toulon-Var - USTV (FRANCE)
Other partners > Université de Technologie de Belfort-Montbéliard - UTBM (FRANCE)
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Deposited On:09 Nov 2015 14:04

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