• 文献标题:   Graphene nanocrystallites induced short run-in period with low electric power at current-carrying sliding interface
  • 文献类型:   Article
  • 作  者:   SUN K, FAN X, YANG L, CHEN SC, FAN JW, DIAO DF
  • 作者关键词:   graphene nanocrystallite, short runin, electric power, low friction, carbon film
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1016/j.apsusc.2021.150902 EA AUG 2021
  • 出版年:   2021

▎ 摘  要

We reported the current-carrying friction behavior of graphene nanocrystallites carbon (GNC) film, which had hybrid structure with graphene nanocrystallites embedded in amorphous carbon (a-C) matrix. The GNC film exhibited high electrical conductance of 7.7 similar to 30.9 S/cm for effective current transmission, and short run-in period of 10 similar to 25 frictional cycles for achieving low friction (mu = 0.03 similar to 0.05) with low electric power of 0.25 similar to 0.60 W under the electric current of 0.5 A. As a comparison, a-C film showed low electrical conductance of 3.2 S/cm and long run-in period of 50 frictional cycles with high electric power of 1.25 W. The high electrical conductance and the short run-in period effectively reduce the electrical and mechanical energy consumption for the GNC film, thus presenting wider promising practical applications. Based on the nanostructure characterization, the role of graphene nanocrystallites was summarized as the electron transport channels for transmitting the electric current and the source of graphene nanocrystallite structure for promoting the low friction interface formation. These findings present potentials of the GNC film in protecting the current-carrying friction interface.