title: Tribology study of reduced graphene oxide sheets on silicon substrate synthesized via covalent assembly.
abstract: Reduced graphene oxide (RGO) sheets were covalently assembled onto silicon wafers via a multistep route based on the chemical adsorption and thermal reduction of graphene oxide (GO). The formation and microstructure of RGO were analyzed by X-ray photoelectron spectroscopy (XPS), attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, Raman spectroscopy, and water contact angle (WCA) measurements. Characterization by atomic force microscopy (AFM) was performed to evaluate the morphology and microtribological behaviors of the samples. Macrotribological performance was tested on a ball-on-plate tribometer. Results show that the assembled RGO possesses good friction reduction and antiwear ability, properties ascribed to its intrinsic structure, that is, the covalent bonding to the substrate and self-lubricating property of RGO.
authors.affiliation: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
authors.forename: Junfei
authors.initials: J
authors.lastname: Ou
authors.forename: Jinqing
authors.initials: J
authors.lastname: Wang
authors.forename: Sheng
authors.initials: S
authors.lastname: Liu
authors.forename: Bo
authors.initials: B
authors.lastname: Mu
authors.forename: Junfang
authors.initials: J
authors.lastname: Ren
authors.forename: Honggang
authors.initials: H
authors.lastname: Wang
authors.forename: Shengrong
authors.initials: S
authors.lastname: Yang