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Speed and Atmosphere Influences on Nanotribological Properties of NbSe2

Bilas, Philippe and Romana, Laurence and Bade, François and Delbé, Karl and Mansot, Jean-Louis Speed and Atmosphere Influences on Nanotribological Properties of NbSe2. (2009) Tribology Letters, 34 (1). 41-48. ISSN 1023-8883

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Official URL: http://dx.doi.org/10.1007/s11249-008-9400-8

Abstract

Nanotribological properties of NbSe2 are studied using an atomic friction force microscope. The friction force is measured as a function of normal load and scan speeds ranging from 10 nm s−1 to 40 μm s−1 under two atmospheres (air and argon). At low speed, no effect of atmosphere is noticed and a linear relationship between the friction and normal forces is observed leading to a friction coefficient close to 0.02 for both atmospheres. At high speed, the tip/surface contact obeys the JKR theory and the tribological properties are atmosphere dependent: the shear stress measured in air environment is three times lower than the one measured under argon atmosphere. A special attention is paid to interpret these results through numerical data obtained from a simple athermal model based on Tomlinson approach.

Item Type:Article
Additional Information:Thanks to Springer editor. The definitive version is available at http://link.springer.com The original PDF of the article can be found at Tribology Letters website : http://link.springer.com/journal/11249
HAL Id:hal-00780496
Audience (journal):International peer-reviewed journal
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Institution:Other partners > Université des Antilles et de la Guyane (FRANCE)
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Deposited On:21 Jan 2013 16:00

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