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Synthesis of hollow fullerene-like molybdenum disulfide/reduced graphene oxide nanocomposites with excellent lubricating properties
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements. State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing Tech University.ORCID iD: 0000-0001-6137-5349
Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron.
Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing .
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2018 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 134, p. 423-430Article in journal (Refereed) Published
Abstract [en]

In this paper, bubble-on-plate structure is realized on hollow IF-MoS2/reduced graphene oxide (HIF-MoS2/RGO) nanocomposites. HIF-MoS2 nanocages templated with the generated ammonia (NH3) are connected to RGO through the interlayered MoS2. The as-prepared HIF-MoS2/RGO is added into an ionic grease to study the tribological behavior of HIF-MoS2/RGO. For comparison, commercial grade MoS2 nanoparticles, single RGO or HIF-MoS2 or their physical mixture are also studied. Tribological results show that, compared with other additives, HIF-MoS2/RGO nanocomposites have the best anti-wear properties especially under higher load of 3.0 GPa. The wear reduction of HIF-MoS2/RGO reinforced grease under 2.5 GPa and 3.0 GPa reached 67% and 96%, respectively. In addition, HIF-MoS2/RGO reinforced grease achieves much lower and stable friction coefficient (0.079, the value of neat grease is 0.098) under 3.0 GPa. HIF-MoS2/RGO reinforced grease maintains very low friction coefficient and wear up to 4.1 GPa, while the normal MoS2 and RGO show high wear at the pressure up to 3.0 GPa. It is proposed that HIF-MoS2 nanocages on RGO act as rolling balls during friction resulting in better separation of steels.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 134, p. 423-430
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-68256DOI: 10.1016/j.carbon.2018.04.021ISI: 000433244900045Scopus ID: 2-s2.0-85047407976OAI: oai:DiVA.org:ltu-68256DiVA, id: diva2:1196415
Note

Validerad;2018;Nivå 2;2018-04-16 (andbra)

Available from: 2018-04-10 Created: 2018-04-10 Last updated: 2018-06-14Bibliographically approved

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Wu, JianLarsson, RolandShi, Yijun

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