Publication detail

Tribological properties of silica–graphene nano-platelet composites

PORWAL, H. TATARKO, P. SAGGAR, R. GRASSO, S. MANI, M. DLOUHÝ, I. DUSZA, J. REECE, M.

Czech title

Tribologické vlastnosti kompozitů s křemičito-grafenovými nanodestičkami

English title

Tribological properties of silica–graphene nano-platelet composites

Type

journal article in Web of Science

Language

en

Original abstract

Graphene nano-platelets (GNP) were synthesised using a liquid phase exfoliation method and then used to produce well dispersed silica–GNP composites. The tribological properties of the silica–GNP composites with different vol% GNP loading were investigated. The wear behaviour at room temperature was studied using a ball on disc technique with alumina and borosilicate (BS) balls as the tribological counterpart. In the case of alumina balls, GNP above a critical concentration decreased the coefficient of friction of the composite by 20% while increasing the wear resistance of the composite by 5.5 times. In the case of using BS balls there was an improvement of 8.5 times in the wear resistance while the coefficient of friction did not change.

Czech abstract

Nanodestičky graphenu byly syntetizovány za použití exfoliace v kapalném prostředí a poté byl s jejich použitím připraven kompozit s matricí silikátového skla. Dále byly studovány tribologické vlastnosti těchto kompozitů s rozdílným obsahem graphenu. Otěruvzdornost byla studována za pokojové teploty za použití "ball on disc" techniky s koulemi z Al2O3 a z borosilikátového skla. V případě Al2O3 koulí graphenove nanodetičky nad určitou kritickou koncentrací snížily koeficient tření o 20% zatímco otěruvzdornost vzrostla 5.5x. V případě koulí z borosilikátového skla bylo pozorováno zlepšení otěruvzdornosti 8.5x zatímco koeficient tření se nezměnil.

English abstract

Graphene nano-platelets (GNP) were synthesised using a liquid phase exfoliation method and then used to produce well dispersed silica–GNP composites. The tribological properties of the silica–GNP composites with different vol% GNP loading were investigated. The wear behaviour at room temperature was studied using a ball on disc technique with alumina and borosilicate (BS) balls as the tribological counterpart. In the case of alumina balls, GNP above a critical concentration decreased the coefficient of friction of the composite by 20% while increasing the wear resistance of the composite by 5.5 times. In the case of using BS balls there was an improvement of 8.5 times in the wear resistance while the coefficient of friction did not change.

Keywords in Czech

silikátové sklo, nanodestičky graphenu, kompozit, mechanické vlastnosti, tribologie

Keywords in English

silica glass, graphen nano platelets, composite, mechanical properties, tribology

RIV year

2014

Released

15.04.2014

Publisher

Elsevier

ISSN

0272-8842

Volume

40

Number

8

Pages from–to

12067–12074

Pages count

8

BIBTEX


@article{BUT113321,
  author="Harshit {Porwal} and Peter {Tatarko} and Richa {Saggar} and Salvatore {Grasso} and Makesh Kumar {Mani} and Ivo {Dlouhý} and Ján {Dusza} and Mike {Reece},
  title="Tribological properties of silica–graphene nano-platelet composites",
  year="2014",
  volume="40",
  number="8",
  month="April",
  pages="12067--12074",
  publisher="Elsevier",
  issn="0272-8842"
}