• Influence of thermomechanical conditions of compaction on electrical conduction of Al2O3 / graphene composite

Possible nature of electrical conductivity of the corund-graphene composite

“…High electrical conductivity was obtained when sintering was carried out at low pressure (1 MPa). At room temperature, the conductivity of the obtained composite was close to the conductivity of metals (7 orders of magnitude lower than that of corundum without graphene) [9]. At the same time, in the process of reheating and subsequent cooling, the electrical resistance was practically independent of temperature and amounted to 0.25 Ω * m. It is assumed that the electrical conductivity is provided by the formation in the bulk of the composite of a conducting network consisting of graphene cells in electrical contact with each other.…”

“…The aim of this work is to deepen knowledge about the nature of the formation of a conducting structure when obtaining a corundum-graphene composite, by continuing the research carried out earlier in this direction [9][10][11].…”