Preparation and Interface Analysis of Graphene Nanosheets Reinforced Pure Titanium Matrix Composites

Graphene nanoplatelets（GNP） reinforced pure titanium lightweight structural materials were prepared by vacuum hot pressing sintering method.The microstructure of the powder and block samples were analyzed by optical microscope,scanning electron microscope and transmission electron microscope.The density test and tensile test were carried out on sintered samples with different content of graphene nanosheets.The research focuses on the dispersion of GNPs in titanium matrix and the interfacial bonding between GNP and titanium matrix.The results show that the interface between GNP and titanium matrix is clearly demarcated,forming a Ti/TiC_x/GNP continuous structure.Most GNP still exists in its nanostructure except for a small amount of TiC_x generated at the interface.