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Friction properties of fluorinated carbons

Thomas, Philippe and Mansot, Jean-Louis and Delbé, Karl and Sauldubois, Audrey and Bilas, Philippe and Romana, Laurence and Legras, Laurent and Dubois, Marc and Guérin, Katia and Hamwi, André Friction properties of fluorinated carbons. (2013) In: World Tribology Congress 2013, 8 September 2013 - 13 September 2013 (Torino, Italy).

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Abstract

In boundary lubrication regime, friction reduction and antiwear processes are associated to the presence of additives in the lubricating oils or greases. These processes are due to the formation of protective tribofilms resulting from chemical reactions between the additives and the sliding surfaces, in the physico-chemical conditions of the sliding contact. Conventional antiwear additives mainly consist of transition metal organo phosphate or thiophosphates which present a remarkable efficiency in the case of contacts between ferrous alloys. In the case of non reacting surfaces, these additives become inactive. Recently developped lubrication strategies consist in the use of dispersion in oils of nano additives able to build the protective tribofilm in the sliding contact without reaction with the surfaces. Carbon fluorinated phases, due to their lamellar structure and their high chemical stability even at relatively high temperature (400°C) represent interesting candidates as lubricant nano-additives subjected to present friction reduction, anti wear and anti corrosion actions. This work presents the tribologic behaviour of some carbon fluorinated derivatives such as graphite fluorides, fluorinated carbon nanofibers, fluorinated carbon nanodiscs and fluorinated carbon blacks. The influence, on the tribologic performances, of the structure of the initial carbon phases, of the fluorination rate (0<F/C<1) and the structure of the fluorinated compounds is discussed.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to World Tribology Congress 2013.http://www.wtc2013.it/home.html
HAL Id:hal-00926514
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > EDF (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université Blaise Pascal - UBP (FRANCE)
Other partners > Université des Antilles et de la Guyane (FRANCE)
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Deposited On:05 Nov 2013 14:12

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