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Nanodiamonds Particles as Additives in Lubricants

Published online by Cambridge University Press:  31 January 2011

Ivanov G. Michail ,
Pavlyshko V. S ,
D. M. Ivanov ,
Igor Petrov ,
Gary McGuire  and
Olga Shenderova
Ivanov G. Michail
Affiliation:
[email protected], Ural State Technical University, Yekaterinburg, Russian Federation
Pavlyshko V. S
Affiliation:
[email protected], Institute of Engineering, Yekaterinburg, Russian Federation
D. M. Ivanov
Affiliation:
[email protected], SKN, Chelyabinsk, Russian Federation
Igor Petrov
Affiliation:
[email protected], Ural State Technical University, Yekaterinburg, Russian Federation
Gary McGuire
Affiliation:
[email protected], ITC, Raleigh, United States
Olga Shenderova
Affiliation:
[email protected], ITC, Raleigh, United States
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Abstract

In the current work we report results of tribological testing of stable colloidal dispersions of detonation nanodiamond (DND) and polytetrafluoroethylene (PTFE) in mineral oil based greases as well as in polyalphaolefin (PAO) oil. Testing has been performed on these formula-tions using ring-on-ring, shaft/bushing and four ball test techniques. The test results demon-strated significant improvements for tribological characteristics (friction coefficient, extreme pressure failure load and diameter of wear spot) for certain formulations. A strong synergistic effect when using a combination of DND/PTFE additives was observed by a sharp decrease of friction coefficient. It was also demonstrated that using DND with smaller aggregate size (10nm versus 150nm) resulted in better lubricating performance of PAO-based composition.

Keywords

lubricantnanostructureadditives
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1203: Symposium J – Diamond Electronics and Bioelectronics-Fundamentals to Applications III , 2009 , 1203-J17-16
Copyright
Copyright © Materials Research Society 2010

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