Abstract:
Nanocrystalline beta-SiC powder was synthesized by thermal plasma in-flight technique. From the transmission electron microscopy, the nanocrystalline product was found to be consisting of nano particles, and nano rods of average diameter 20 nm and length 500 nm. The structural evidence of formation of nanocrystalline beta-SiC is observed from the X-ray diffraction studies. The beta-phase of the SiC product was also detected through micro-Raman spectrum from two distinct phonon vibration modes at 783 and 982 cm(-1). The transmittance peak observed at 817 cm(-1) in Fourier transform infrared spectroscopy confirms the product as beta-SiC.