Tribological Properties of Motor Oil with Nanodiamond Additive tested for steel friction surfaces with different hardnes

  • PDF / 4,751,507 Bytes
  • 7 Pages / 612 x 792 pts (letter) Page_size
  • 6 Downloads / 158 Views

DOWNLOAD

REPORT


Erratum Tribological Properties of Motor Oil with Nanodiamond Additive tested for steel friction surfaces with different hardnesses – ERRATUM M. Ivanov, S. Smirnov, S. Pavlyshko, D. Ivanov, D. Brenner, and O. Shenderova doi: 10.1557/opl.2013.1146, Published by Materials Research Society, 26 November 2013. The article by Ivanov et al. was published with the incorrect volume number. The correct volume number is Volume 1597. The Materials Research Society and Cambridge University Press apologize to the authors for this error. The correct version of the article follows this notice.

Reference M. Ivanov, S. Smirnov, S. Pavlyshko, D. Ivanov, D. Brenner and O. Shenderova (2013). Tribological Properties of Motor Oil with Nanodiamond Additive tested for steel friction surfaces with different hardnesses. MRS Online Proceedings Library, 1597, jsapmrs13-15976038 doi:10.1557/opl.2013.1146.

Mater. Res. Soc. Symp. Proc. Vol. 1597 © 2013 Materials Research Society DOI: 10.1557/opl.2013 .1146

Tribological Properties of Motor Oil with Nanodiamond Additive tested for steel friction surfaces with different hardnesses M. Ivanov1*, S.Smirnov2, S.Pavlyshko2, D. Ivanov1, D.Brenner3, O.Shenderova4 1 Ural Federal University, Yekaterinburg, Russian Federation 2 Institute of Engineering Science Ural Branch RAS, Yekaterinburg, Russian Federation 3 North Carolina State University, Raleigh, USA 4 International Technology Center, Raleigh, USA ABSTRACT Synergistic compositions of detonation nanodiamond (ND) particles in the form of 100nm aggregates in combination with molybdenum dialkyldithiophosphate were used as additives to 10W40 oils. Ring-on-disk tribological tests were performed under high load conditions using friction pairs with different hardnesses, namely normalized-normalized (“soft/soft”) and normalized-quenched (“soft/hard”) steel samples. For the “soft/hard” steel friction pair NDs provide significant reduction in both the coefficient of friction and wear as well as demonstrate polishing. For the “soft/soft” steel friction pair, however, no difference in the coefficients of friction was observed when the base oil was used with or without ND. In the test with oil containing the ND additive, the wear scar in the disk was wider, but more shallow, than in the test with pure oil. Current tests indicate that the significance of the reduction of friction and wear of the sliding surfaces in the presence of the ND additive in oil strongly depends on the hardness of the friction surfaces and most probably is connected with ND polishing effect. INTRODUCTION Recent studies have shown that lubricant formulations containing nanoparticles are capable of reducing friction and wear at sliding interfaces [1]. These formulations include compositions with detonation nanodiamond (DND) and detonation soot (a mixture of DND particles with different forms of sp2-bonded carbon) [2-4], which often provide superior lubrication performance compared to other nanoparticle fillers. In addition, carbon-based ultrafine additives are biocompatible, which mitigates