Experimental study of carbon nanotubes in high viscosity lubricants

• Autorzy: Kałużny Jarosław , Kinal Grzegorz , Stepanenko Aleksander , Merkisz Jerzy

Identyfikatory

DOI

10.19206/CE-2019-436

• Języki publikacji: EN

Abstrakty

EN

Carbon nanotubes (CNTs) beneficial tribological properties were reported in numerous studies performed mostly in idealized tribometer conditions, previously described full engine tests confirmed that CNTs added to the lubricating oil reduced friction significantly. Apparently the engine application requires low CNT concentration in oil, otherwise when increasing the CNT concentration beyond a certain level oil viscosity increases, rapidly forming a greasy substance not suitable for engine lubrication. In this paper we report a study of tribological properties of such a high viscosity lubricant performed in Amsler tribometer in comparison to high quality commercially available lithium grease. The CNT based high viscosity lubricant in its current formulation turned out as not reliable for general application due to its low adhesion to the metal surface. In contrary to some samples made of a polymer widely used in industry as a friction component, we observed wear reduction reaching nearly 50% when replacing the best suitable lithium grease by a CNT based lubricant. This effect was first observed after 30 min into a friction test, suggesting a CNT related mechanism of anti-wear protection which still need to be explained.

Słowa kluczowe

EN

carbon nanotube; friction; grease

PL

nanorurki węglowe; tarcie; smar

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2019
• Tom: R. 58, nr 4
• Strony: 216--219
• Opis fizyczny: Bibliogr. 12 poz., fot., 1 rys., wykr.

Twórcy

autor

Kałużny Jarosław

• Faculty of Transport Engineering, Poznan University of Technology

autor

Kinal Grzegorz

• Faculty of Transport Engineering, Poznan University of Technology

autor

Stepanenko Aleksander

• Faculty of Transport Engineering, Poznan University of Technology

autor

Merkisz Jerzy

• Faculty of Transport Engineering, Poznan University of Technology

Bibliografia

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• [2] ERDEMIR, A., RAMIREZ, G., ERYILMAZ, O.L. et al. Carbon-based tribofilms from lubricating oils. Nature. 2016, 536, 67-71.
• [3] MENG, Y, SU, F, CHEN, Y. Supercritical fluid synthesis and tribological applications of silver nanoparticle-decorated graphene in engine oil nanofluid. Sci. Rep. 2016, 6, 31246.
• [4] ESWARAIAH, V., SANKARANARAYANAN, V., RAMAPRABHU, S. Graphene-based engine oil nanofluids for tribological applications. ACS Appl Mater Interfaces. 2011, 3, 4221-4227.
• [5] De VOLDER, M.F.L., TAWFICK, S.H., BAUGHMAN, R.H., HART, A.J. Carbon nanotubes: present and future commercial applications. Science. 2013, 339.
• [6] KAŁUŻNY, J. et al. Lubricating performance of carbon nanotubes in internal combustion engines - engine tests results for CNT enriched oil. IJAT. 2017, 18(6).
• [7] KAŁUŻNY, J., MERKISZ, J., KEMPA, K. Friction reducing performance of carbon nanotubes covered pistons in internal combustion engines - engine test results. Combustion Engines. 2018, 172, 14-24.
• [8] CHAVEAU, V., MAZUYER, D., DASSENOY, F., CAYER-BARRIOZ, J. In situ film-forming and friction-reduction mechanisms for carbon-nanotube dispersions in lubrication. Tribol Lett. 2012, 47, 467-480.
• [9] HWANG, Y., LEE, C., CHOI, Y. et al. Effect of size and morphology of particles dispersed in nano-oil on friction performance between rotating discs. Journal of Mechanical Science and Technology. 2011, 25(11), 2853-2857.
• [10] DAI, W. et al. Roles of nanoparticles in oil lubrication. Tribology International. 2016, 102, 88-98.
• [11] HONG, H. et al. Carbon nanotube grease with enhanced thermal and electrical conductivities. J Nanopart Res. 2010, 12, 529-535.
• [12] HONGTAO, L. et al. Tribological properties of carbon nanotubes grease. Industrial Lubrication and Tribology. 2014, 66(5), 579-583.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).