چكيده به لاتين
Graphene has many unique properties including high electron mobility at room temperature, high Young's modulus, high fracture toughness, high heat transfer, etc., which have made graphene a perfect choice in many cases such as sensors, Apply electrodes, fuel cells, supercapacitors, etc. Silicon carbide is a semiconductor with suitable properties for use in harsh environmental conditions (high erosion, high temperature, high pressure, etc.). In fact, the unique features of silicon carbide are because of its strong structure, large energy band gap, high thermal stability and so on. Silicon carbide is a very hard material with Young's modulus of 424 GPa. In this thesis, the mechanical properties of silicon-graphene carbide composite are investigated using molecular dynamics method. In order to investigate the mechanical properties of silicon-graphene carbide composite, uniaxial tensile test on pure silicon carbide and silicon-graphene carbide composite (graphene monolayer) was first investigated. Then the effect of number of graphene layers on the hardness of Silicon carbide-graphene composite (monolayer, double-layer, three-layer and five-layer) was investigated investigated using nanoindentation test. The results show that although the addition of graphene can increase the elastic modulus of the composite, the hardness of silicon carbide-graphene composite is lower than that of silicon carbide.
