New graphene/ionic liquid nanolubricants

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URI: http://hdl.handle.net/10317/5325
ISSN: 2214-7853
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Author
Saurín Serrano, Noelia; Sanes Molina, José; Bermúdez Olivares, María Dolores
Research Group
Grupo de Ciencia de Materiales e Ingeniería Metalúrgica
Sponsors
The authors thank the financial support of the Ministerio de Economia y Competitividad (MINECO, Spain; FEDER, EU) (Grant MAT2014-55384-P). “Este trabajo es resultado de los proyectos de investigación (19292/PI/14, 19544/GERM/14 and 19877/GERM/14) financiados por la Fundación Séneca-Agencia de Ciencia y Tecnología de la Región de Murcia en el marco del PCTIRM2011-2014”. N. Saurin is grateful to MINECO (Spain) for a FPI research Grant (BES-2012-056621).
Publication date
2016
Publisher
Elsevier
Bibliographic Citation
SAURÍN SERRANO, Noelia, SANES MOLINA, José, BERMÚDEZ OLIVARES, María Dolores. New graphene/ionic liquid nanolubricants. En: Materials Today: Proceedings, vol. 3, S., 2, pp. S227–S232, 2016. ISSN: 2214-7853
Keywords
Epoxy resin
Stainless steel
Sapphire
Ionic liquid
Graphene
Nanolubricants
Friction
Wear
Abstract
In this work, we have prepared new graphene/ionic liquid dispersions by adding a 0.1wt.% proportion of 1-2 layers graphene (G1) or 1-10 layers graphene (G2) to the ionic liquid 1-octyl-3-methylimidazolium tetrafluoroborate (IL). The new dispersions (IL+G1) and (IL+G2) have been used as external lubricants in polymer-steel and ceramic-steel contacts. For AISI 316L stainless steel/epoxy resin, the order of friction reduction is (IL+G2)>IL>(IL+G1). The wear reducing order is the same, as abrasive wear takes place for (IL+G1), while G2 prevents any degree of surface damage on both materials, even the very mild wear observed for neat IL. The poor performance of G1 is related to the formation of abrasive graphene-IL aggregates. The (IL+G2) dispersion also shows superior friction reducing and anti-wear behavior under more severe contact conditions, for AISI316L against sapphire.
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