[T17] Composite/Hybrid Materials

[16D-T17-05] Mechanical Properties of Graphene Nanoplatelet Reinforced Cu Matrix Composites

S. Ali¹, *F. Ahmad¹ (1.Universiti Teknologi PETRONAS, Malaysia)

キーワード：Graphene nanoplatelets, Cu matrix composites, Sintering, Physical properties, Mechanical properties

The property enhancement of graphene reinforced Cu matrix composites depends on the quality of graphene. Herein, we reported the as received graphene nanoplatelet (~3 at. % oxygen) reinforced Cu matrix composites (GNP/Cu) fabricated via low pressure pressing (20 MPa) and sintering (1050 °C) in 95%Ar-5%H₂ atmosphere. The physical and mechanical properties of GNP/Cu composites were studied with varying vol.% of GNPs. The composite sample with 3 vol. % GNPs showed highest density (93.27%), microhardness (55.74 HV) and calculated tensile strength (182.69 MPa). The nano hardness test at specified regions i.e., Cu matrix, GNPs and GNP/Cu interface showed similar trend for nanoindentation hardness. The physical and mechanical property enhancements with vol. % of GNPs were attributed to the filling of pores by GNPs until the agglomeration of GNPs dominated. Thus, the relatively pristine graphene derivatives such as graphene nanoplatelets can potentially enhance the physical and mechanical properties of Cu matrix composites.