Special Issue "Lubricants"

Guest Editor
Prof. Dr. Maria Dolores Bermudez
Materials Science and Engineering Research Group, Materials and Manufacturing Engineering Department, Universidad Politécnica de Cartagena (UPCT), 30203 Cartagena, Spain
Website: http://www.dimf.upct.es/gcmim
E-Mail:
Interests: ionic liquids; wear; surface interactions; tribochemistry; metal-metal contacts; polymer-metal contacts; ordered fluids as lubricant and polymer additives; nanocomposites

Dear Colleagues,

The traditional role of lubricants was to protect and increase the service life of mechanisms, devices and components. Today customer-designed lubricants must take into account environmental, health and energy consumption issues.
Scientists and engineers now dispose of a battery of surface and chemical analysis tools which enable them to try to comprehend the micro- and nanomechanisms operating at the sliding contacts, including lubricant-surface interactions, tribochemistry and tribocorrosion processes. The new advances in synthesis and instrumentation have open the era of nanomaterials and nanolubricants, where solid nanophases or lubricant dispersed nanophases are used as lubricants.
Additives are materials or molecules that improve the performance of lubricants. Advances have been recently made on the use of so-called ‘ordered fluids’, such as mesophases and room temperature ionic liquids both as neat lubricants and lubricant additives.
From the materials point of view, effective lubrication of light alloys and some polymers remains a challenge. Finally, lubrication under extreme conditions such as high temperature, cryogenic conditions or high vacuum is a determining technology for advanced industrial and aerospace applications.
This special issue on Lubricants should cover the present moment and future developments in the field lubricant development and application.

Prof. Dr. Maria Dolores Bermudez
Guest Editor

All manuscripts should be submitted to materials@mdpi.org with a copy to the Guest Editor. Manuscripts can be submitted until the deadline. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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• sliding friction
• sliding wear
• lubricated wear
• boundary lubrication
• lubricant additives
• solid lubricants
• surface topography
• surface analysis
• nanotribology
• tribochemistry

Type of Paper: Review
Title: C₆₀ Intercalated Graphite Oxide as Nanolubricant
Authors: Makoto Ishikawa ¹, Naruo Sasaki ² and Kouji Miura ¹
Affiliations: ¹ Department of Physics, Aichi University of Education, Hirosawa 1, Igayacho, Kariya 448-8542, Japan; E-Mail: kmiura@auecc.aichi-edu.ac.jp (K.M.)
² Department of Materials and Life Science, Faculty of Science and Technology, Seikei University, 3-3-1 Kichijoji-Kitamachi, Musashino, Tokyo 180-8633, Japan
Abstract: Carbon nanomaterials such as carbon fullerenes, carbon nanotubes and graphenes, and moreover their combination have been of great interest because their structures and material properties lead to attractive applications. Up to now, we have studied C₆₀ monolayer confined by graphite flakes and C₆₀ monolayer included in places of graphite, which, interestingly, exhibits ultralow friction, because C₆₀ molecules act as a molecular bearings. Moreover, we prepared the novel C₆₀ intercalated graphite oxide using alkylamine, which structure provides alternately stacked single graphene oxide sheet and C₆₀ two-dimensional array.
Here we report that particles of the novel C₆₀ intercalated graphite oxide provide more excellent lubrication as an additive in oil and grease than MoS₂ and PTTE particles, and moreover as an additive in film coating.