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Poster communications

Study by fluorescence microscopy of the architecture and morphology of friction reduction films deposited by tribo-assisted technique

Abstract : The tribo-assisted technique is a method recently developed to deposit a thin film of a lubricant material on a surface of varied geometry. This technique uses a wiper to deposit, in a tribological contact whose physicochemical conditions are favorable, the lubricant material on the surface to be treated. The deposit can be made in dry or in the presence of liquid To improve the performances (durability, transferability, mechanical resistance ...) of the films deposited by this technique, we investigated on the morphology and the architecture of a lubricant films of MOS2 and hBN deposited in the presence of the dodecane. This study was carried out in the static contact at the end of the deposit in order to eliminate the liquid film entrained in the contact during the friction. Mapping of the contact area in dodecane thickness using in situ fluorescence spectrometry are carried out and they highlight the presence or no of liquid in the static contact. These analyzes are carried out for load values supported by the contact of 10 N, 5 N, 2 N and 0.5 N in order to evaluate the compactness and rigidity of the films in the applied load range. This microstructural study carried out on the films at the end of the deposit reveals that those formed of MoS2 nanoparticles are compact and have a very smooth surface resulting from the packing of particles in the form of small lamellae; which gives them a good tribological performance, whereas those formed of h-BN nanoparticles are porous and have a rough surface resulting from the stacking of more rigid particles.
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https://hal.univ-antilles.fr/hal-02531806
Contributor : Eliane Falco <>
Submitted on : Friday, April 3, 2020 - 8:53:55 PM
Last modification on : Saturday, April 4, 2020 - 1:46:17 AM

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  • HAL Id : hal-02531806, version 1

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J.W. Petit, Jean-Louis Mansot, Audrey Molza, Y. Bercion. Study by fluorescence microscopy of the architecture and morphology of friction reduction films deposited by tribo-assisted technique. Caribbean Science and Innovation Meeting 2019, Oct 2020, Pointe-à-Pitre (Guadeloupe), France. ⟨hal-02531806⟩

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