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Lubricants 2016, 4(2), 12; doi:10.3390/lubricants4020012

Tribological Properties of the Lubricant Containing Titanium Dioxide Nanoparticles as an Additive

1,†,* and 2,†
1
Department of Machine Elements and Tribology, Polytechnic University of Bucharest, 313 Spl. Independentei, 060042 Bucharest, Romania
2
Department of Biotechnical Systems, Polytechnic University of Bucharest, 313 Spl. Independentei, 060042 Bucharest, Romania
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editors: Antolin Hernández Battez and Rubén González Rodríguez
Received: 4 January 2016 / Revised: 12 April 2016 / Accepted: 12 April 2016 / Published: 21 April 2016
(This article belongs to the Special Issue Nanoparticles and Ionic Liquids in Lubrication)
View Full-Text   |   Download PDF [1525 KB, uploaded 21 April 2016]   |  

Abstract

To improve the oil-solubility of nanoparticles, a new technology was used to prepare a kind of lubricant containing titanium dioxide (TiO2) nanoparticles. The microstructures of the prepared nanoparticles were characterized via transmission electron microscope (TEM) and infrared spectroscopy (IR). Tribological properties of TiO2 nanoparticles used as an additive in base oil were evaluated using four-ball tribometer and ball-on-disk tribometer. In addition, the worn surface of the steel ball was investigated via polarized microscopy (PM) and X-ray photoelectron spectroscopy (XPS). The TiO2 nanoparticles can be completely well-dispersed in the base oil under a new process (NP), which has no significantly negative effect on the anti-oxidation property. The results of the tribological tests show that TiO2 nanoparticles under the NP show a better anti-wear property and friction-reducing property in base oil compared to TiO2 nanoparticles under the tradition process (TP). The main aim of this paper lies in solving with the oil-solubility problem through the combination effect of surface modification and special blend process of lubricating oil. This method was first used to prepare lubricant containing TiO2 nanoparticles and then used as additives in engine oil, gear oil, and other industrial lubricants. At the same time, tribological properties of TiO2 nanoparticles in base oil as a lubricating additive were also studied. View Full-Text
Keywords: blended oil; lubricants; titanium dioxide (TiO2) nanoparticles; oil-solubility; tribological properties blended oil; lubricants; titanium dioxide (TiO2) nanoparticles; oil-solubility; tribological properties
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ilie, F.; Covaliu, C. Tribological Properties of the Lubricant Containing Titanium Dioxide Nanoparticles as an Additive. Lubricants 2016, 4, 12.

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