Journal
WEAR
Volume 262, Issue 7-8, Pages 819-825Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2006.08.021
Keywords
nanoparticles; lubricating oil; tribology; rolling effect
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This study examined the tribological properties of two lubricating oils, an API-SF engine oil and a Base oil, with CuO, TiO2, and Nano-Diamond nanoparticles used as additives. The friction and wear experiments were performed using a reciprocating sliding tribotester. The experimental results show that nanoparticles, especially CuO, added to standard oils exhibit good friction-reduction and anti-wear properties. The addition of CuO nanoparticles in the API-SF engine oil and the Base oil decreased the friction coefficient by 18.4 and 5.8%, respectively, and reduced the worn scar depth by 16.7 and 78.8%, respectively, as compared to the standard oils without CuO nanoparticles. In addition, investigations were performed using TEM, OM, SEM, and EDX to interpret the possible mechanisms of anti-friction and anti-wear with nanoparticles. (c) 2006 Elsevier B.V. All rights reserved.
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