Nanopowder silicon carbide (SiC) was produced in this research through chemical method.
Saccharose and TEOS were used as precursors of C and Si. Gels were prepared by mixing the raw materials with
different pH values followed by drying them. They were pyrolyzed at 650°C and then reduced using
carbothermal operation. XRD results indicated that the produced powders under these conditions were only
composed of -SiC. Analysis on Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM)
micrographs has revealed that pH value of 4 has yielded spherical grains and maximum efficiency with minimum
grain size and agglomeration.
کلید واژگان :
Nanopowder Silicon dioxide Synthesis Chemical method
