Zinc dialkyldithiophosphates (ZnDTPs) are known to be anti-oxydant and antiwear additives under boundary lubrication conditions and are thus extensively used for car engine lubrication. It was demonstrated that their anti-wear action is associated with the formation of a protective tribofilm on the rubbing surfaces. In this study, mechanical properties of a ZnDTP tribofilm were measured by nanoindentation at various temperature ranging from room temperature to 80°C. From these first tests, it was found that the hardness of the tribofilm measured at 80°C is half the hardness value measured at room temperature, while the Young’s modulus remains constant in the tested temperature range.
Mechanical Properties of ZnDTP Tribofilms Measured by Nanoindentation at Controlled Temperature
Bec, S, Demmou, K, Loubet, J, Pavan, S, Minfray, C, & Martin, J. "Mechanical Properties of ZnDTP Tribofilms Measured by Nanoindentation at Controlled Temperature." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 2. Washington, D.C., USA. September 12–16, 2005. pp. 823-824. ASME. https://doi.org/10.1115/WTC2005-64011
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