Performance and anti-wear mechanism of CaCO 3 nanoparticles as a green additive in poly-alpha-olefin

Performance and anti-wear mechanism of CaCO 3 nanoparticles as a green additive in poly-alpha-olefin This paper reports the tribological behavior of CaCO 3 nanoparticles as a green additive in poly-alpha-olefin (PAO) base oil under variable applied load, sliding speed, sliding duration, and temperature. The tribological properties and the electrical contact resistance between the tribo-pairs lubricated with PAO alone, and PAO containing CaCO 3 nanoparticles, were determined using an Optimol-SRV 4 oscillating friction and wear tester (SRV). The morphology and wear volume of the worn scar were measured simultaneously using a surface profilometer. The results showed that CaCO 3 nanoparticles can dramatically improve the load-carrying capacity, as well as the anti-wear and friction-reduction properties of a PAO base oil. In addition, higher applied load, moderate frequency, longer duration time, and lower temperatures are beneficial to the deposition of CaCO 3 nanoparticles accumulating on rubbing surfaces. X-ray photoelectron spectroscopy (XPS) reveals a boundary film composed of CaCO 3 , CaO, iron oxide, and some organic compounds on the worn surfaces. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tribology International Elsevier

Performance and anti-wear mechanism of CaCO 3 nanoparticles as a green additive in poly-alpha-olefin

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Publisher
Elsevier
Copyright
Copyright © 2009 Elsevier Ltd
ISSN
0301-679X
eISSN
1879-2464
D.O.I.
10.1016/j.triboint.2009.02.012
Publisher site
See Article on Publisher Site

Abstract

This paper reports the tribological behavior of CaCO 3 nanoparticles as a green additive in poly-alpha-olefin (PAO) base oil under variable applied load, sliding speed, sliding duration, and temperature. The tribological properties and the electrical contact resistance between the tribo-pairs lubricated with PAO alone, and PAO containing CaCO 3 nanoparticles, were determined using an Optimol-SRV 4 oscillating friction and wear tester (SRV). The morphology and wear volume of the worn scar were measured simultaneously using a surface profilometer. The results showed that CaCO 3 nanoparticles can dramatically improve the load-carrying capacity, as well as the anti-wear and friction-reduction properties of a PAO base oil. In addition, higher applied load, moderate frequency, longer duration time, and lower temperatures are beneficial to the deposition of CaCO 3 nanoparticles accumulating on rubbing surfaces. X-ray photoelectron spectroscopy (XPS) reveals a boundary film composed of CaCO 3 , CaO, iron oxide, and some organic compounds on the worn surfaces.

Journal

Tribology InternationalElsevier

Published: Jul 1, 2009

References

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