Electron microscopic study of carbon powders and their composites

Primary ultrafine carbon powders were obtained using the sol-gel method and drying in a supercritical fluid using various carbon raw materials. By heat treatment at 1000-1100 °C, ultrafine carbon powders were obtained. The properties of primary ultrafine carbon powders and their annealing products were studied using a Tescan Vega 3 SEM scanning electron microscope (SEM). The results show that the starting materials affect the structure of the resulting ultrafine carbon powders.