Synthesis of powder functional composite materials containing g-C3N4, β-Si3N4 and Si2N2O phases

Abstract

The article discusses the technology of alloying carbon material with Taunite-M nitrogen and silicon, which combines mechanochemical synthesis in a spherical planetary mill and multistage heat treatment up to 1100°C. The aim of the work is to obtain a new material based on nanostructured carbon raw materials with improved physical and chemical properties as a result of the formation of new phases due to the introduction of silicon and melamine into the initial charge as a source of nitrogen. The phase composition of the obtained samples was studied by X-ray diffractometry, the porosity and distribution of chemical elements in the samples of the obtained material were evaluated using X-ray tomography and scanning electron microscopy. Based on the results obtained, conclusions are formulated about the formation of phases of graphite-like carbonitride, nitride and oxynitride of silicon in a thermally stable nanocarbon material.