▎ 摘　　要

The friction and wear behaviour of hot pressed boron carbide/graphene platelets (GPLs) composites have been investigated using the ball-on-flat technique with SiC ball under dry sliding conditions at room temperature. The hardness and fracture toughness of the investigated materials varied from 18.21 GPa to 30.35 GPa and from 3.81 MPa.m(1/2) to 4.60 MPa.m(1/2), respectively. The coefficient of friction for composites were similar, however the wear rate significantly decreased similar to 77% in the case of B4C + 6 wt.% GPLs when compared to reference material at a load of 5 N, and similar to 60% at a load of 50 N. Wear resistance increased with increasing GPLs content in regards to the present graphene platelets, which during the wear test pulled-out from the matrix, exfoliated and created a wear protecting graphene-silicon based tribofilm. (C) 2016 Elsevier Ltd. All rights reserved.