Experimental studies on the tribological behaviour of engine oil (SAE15W40) with the addition of CuO nanoparticles

Purpose – This manuscript aims to deal with the tribological property variations of engine oil (SAE15W40) by the addition of copper oxide (CuO) nanoparticles on weight percentage basis. Design/methodology/approach – Experimental studies on the influence of CuO nanoparticles utilised as an additive i...

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Bibliographic Details
Published in:Industrial lubrication and tribology 2014-01, Vol.66 (2), p.289-297
Main Authors: V. Thottackkad, Manu, Rajendrakumar, P.K, Prabhakaran Nair, K
Format: Article
Language:English
Subjects:
Additives
Copper oxides
Engineering
Engines
Friction
Lubricants & lubrication
Lubrication
Mechanical engineering
Nanoparticles
Scanning electron microscopy
Settling
Spectrum analysis
Thin films
Trends
Tribology
Viscosity
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Summary:Purpose – This manuscript aims to deal with the tribological property variations of engine oil (SAE15W40) by the addition of copper oxide (CuO) nanoparticles on weight percentage basis. Design/methodology/approach – Experimental studies on the influence of CuO nanoparticles utilised as an additive in lubricating oil (SAE15W40) under boundary lubrication conditions have been carried out using a pin-on-disc machine in accordance with ASTM G-99 standard. The variation of viscosity, coefficient of friction, wear and settling of nanoparticles has been studied as a function of particle concentration in the lubricant. Findings – Results show that the frictional force and specific wear rate decrease with an increase in concentration of nanoparticles comes to a minimum at a specific concentration and then increases, showing the presence of an optimum concentration. With the increase in concentration of nanoparticles, the kinematic and dynamic viscosities, and the flash and fire points are found to increase. Originality/value – The use of CuO nanoparticles as additives to a moderate level is a very efficient means of improving the tribological properties of lubricating oils.
ISSN:0036-8792
1758-5775
DOI:10.1108/ILT-01-2012-0006