Grafen-Si3N4 Takviyeli Hidroksiapatit Nanokompozitlerin Mekanik ve Yapısal Özellikleri.

It is known that hydroxyapatite is similar to the inorganic structure of bones and teeth. However, the use of pure HA in bone-tooth implants is limited because it has low mechanical properties. To overcome this problem, composites can be formed with various bio-ceramics. In this study, it was aimed to produce a new biocompatible composite material with high mechanical strength by adding different amounts of graphene and a constant amount of Si3N4 to HA. 5 different Hydroxyapatite-Silicon Nitride-Graphene bio composites with different reinforcement ratios were turned into pellets with the help of a single-axis press and sintered at 1 100 °C for 2 hours to gain final strength. The densities of the samples were determined according to the Archimedes principle, the microstructure was analysed by scanning electron microscopy (SEM) and the formed phases were determined by XRD analysis. In addition, the hardness of the samples was measured with Microvickers. As a result of the studies, it was determined that the hardness and density values increased by adding graphene and Si3N4 to HA. In addition, mechanisms that increase fracture toughness were observed in SEM images. [ABSTRACT FROM AUTHOR]