Effect of primary materials ratio and their stirring time on SiC nanoparticle production efficiency through sol gel process

In this article, SiC (silicon carbide) Nanopowder was synthesized by sol-gel method. TEOS and sucrose were used as pricier source. Final gel were prepared by mixing in different stirring times and different ratio in pH=4 and drying. This mixture was heated at 650°C and carbothermal reduction was carried out at 1500°C. XRD analyses showed that produced powder in this condition are only b-Sic . Investigating SEM and TEM images and PS diagrams for different samples one can realize that in TEOS/sucrose=4 and stirring time, 5 hours, maximum efficiency and minimum grain size and minimum agglomeration occurs. Experiment result indicated that nano silicium carbide along with tetraethoxysilane, ethanol, sucrose and water can be used as carbon supply. Average grain size which has been seen by SEM was less than 100 nm