Mechanical, Wear and Thermal Behaviors of Graphene Reinforced Titanium Composites

In this study, the effects of graphene content (0.15, 0.30, 0.45 and 0.60 wt%) on the mechanical, tribological and thermal properties of titanium matrix composites were investigated. The experimental results showed that the highest ultimate compressive strength (845 MPa), tensile strength (613 MPa), lowest mass loss (0.6 mg for 10 N), and lowest wear rate (WR = 286 × 10⁻⁵ mm³/Nm for10 N) were obtained for Ti-0.15GNPs compared with pure titanium (652 MPa, 413 MPa, 1 mg and 5 × 10⁻⁵ mm³/Nm, respectively). The wear rate of composites deteriorates with increasing applied load. From the thermal analysis results, the best thermal conductivity (16 W/mK) and diffusivity (7.1 mm²/s) were performed for Ti-0.30GNPs composites at room temperature. The thermal behavior of the composites was decreased with increasing graphene content and temperature. It concluded that graphene is an effective reinforcement to develop the mechanical, wear and thermal behavior of titanium matrix composites.