▎ 摘　　要

In this work, the role of graphene on indentation and scratch properties of soda lime silicate (SLS) glass is investigated by nanoindentation and nanoscratch as well as Vickers indentation tests. The results show that compared with bare SLS glass, the nanohardness and reduced modulus of graphene coated on SLS (G/SLS) glass are higher, because G/SLS glass surface can accommodate more strain energy through elastic process. The nanoscratch resistance of G/SLS glass is increased by-30%-44%, since the monolayer graphene can effectively reduce the friction force and activation volume of SLS glass during the mechanochemical wear process in humid air. Furthermore, the subsurface damage of G/SLS glass upon nanoindentation and nanoscratch tests are reduced, and the Vickers hardness and indentation fracture toughness of G/SLS glass are increased. These results clearly show the monolayer graphene can protect the SLS glass surface from physical contact via both normal and tangential shear tests.