• 文献标题:   Graphene-Ionic Liquid Thin Film Nanolubricant
  • 文献类型:   Article
  • 作  者:   AVILES MD, PAMIES R, SANES J, BERMUDEZ MD
  • 作者关键词:   graphene, ionic liquid, thin film, spin coating
  • 出版物名称:   NANOMATERIALS
  • ISSN:  
  • 通讯作者地址:   Tech Univ Cartagena
  • 被引频次:   2
  • DOI:   10.3390/nano10030535
  • 出版年:   2020

▎ 摘  要

Graphene (0.5 wt.%) was dispersed in the hydrophobic room-temperature ionic liquid 1-octyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide (IL) to obtain a new non-Newtonian (IL + G) nanolubricant. Thin layers of IL and (IL + G) lubricants were deposited on stainless steel disks by spin coating. The tribological performance of the new thin layers was compared with those of full fluid lubricants. Friction coefficients for neat IL were independent of lubricant film thickness. In contrast, for (IL + G) the reduction of film thickness not only afforded 40% reduction of the friction coefficient, but also prevented wear and surface damage. Results of surface profilometry, scanning and transmission electron microscopy (SEM and TEM), energy dispersive analysis (EDX), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were discussed.