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Tribological properties of low-temperature graphite fluorides. Influence of the structure on the lubricating performances

Thomas, Philippe and Delbé, Karl and Himmel, David and Mansot, Jean-Louis and Cadoré, Franck and Guérin, Katia and Dubois, Marc and Delabarre, Céline and Hamwi, André Tribological properties of low-temperature graphite fluorides. Influence of the structure on the lubricating performances. (2006) Journal of Physics and Chemistry of Solids, vol. 67 (n° 5-6). pp. 1095-1099. ISSN 0022-3697

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Official URL: http://dx.doi.org/10.1016/j.jpcs.2006.01.084

Abstract

The present work is concerned with the study of the tribological properties of various fluorinated carbon phases obtained at room temperature and then post-treated under fluorine atmosphere at different temperatures. The tribological tests evidence good intrinsic properties for all the compounds (friction coefficient in the range 0.07–0.09). Differences appear after few cycles. Friction measurements after 100 cycles and complementary Raman analyses of the tribofilm remaining in the wear scar point out that long term tribologic properties of the fluorinated compounds strongly depend on the evolution undergone by the materials under friction. The release of HF molecules, the loss of fluorine and partial rebuilding of graphitic phases are at the origin of the degradation of the friction properties. The good properties of the compounds post-treated at temperature in the range 150–300 °C are attributed to the chemical and structural stability of these compounds under friction.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Physics and Chemistry of Solids website : http://www.sciencedirect.com/science/article/pii/S002236970600045X
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Université Blaise Pascal - UBP (FRANCE)
Other partners > Université des Antilles et de la Guyane (FRANCE)
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Deposited By: Karl DELBE
Deposited On:20 Nov 2012 14:48

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