Tungsten carbide nanoparticles were synthesized successfully by DC arc discharge plasma process with 23 A discharge current at atmospheric pressure, in which tungsten positive electrode reacted with carbon black produced from the benzene cracking. The XRD results indicate that the samples consist of carbon black, WC and W 2 C . The TEM micrographs show that the tungsten carbide particles range from 3 to 7 nm in size, and are composed of WC and W 2 C .
The Effect of Surfactant on Colloidal Stability, Oxidation and Optical Properties of Aluminum Nanoparticles Prepared via Dc Arc Discharge in Water