Improving the macro-scale tribology of monolayer graphene oxide coating on stainless steel by a silane bonding layer

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Abstract

This work aimed at improving the macro-scale tribology of single-layer graphene oxide (GO) coating on metallic surfaces. To this end, stainless steel substrate was modified by a silane prior to the self-assembly of a GO coating. Tribological tests, Raman spectroscopy and elemental analysis were performed. The results show that the pre-deposited silane intermediate layer effectively enhanced the tribological performance of the top GO coating in terms of very low friction (∼0.1), 10-fold reduction in wear and increased coating durability by 20 times. The improvement could be mainly attributed to the enhanced bonding via the silane layer.
Original languageEnglish
Pages (from-to)15-18
JournalMaterials Letters
Volume209
Early online date22 Jul 2017
DOIs
Publication statusPublished - 15 Dec 2017

Keywords

  • graphene
  • thin film
  • surface modification
  • bonding
  • tribology

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