Abstract

The ultra-fine and less agglomerated titanium carbonitride particles were successfully synthesized by magnesiothermic reduction with low feeding rate of TiCl_4+1/4C_2Cl_4 solution. The sub-stoichiometric titanium carbide (TiC_0.5sim0.6) particles were produced by reduction of chlorine component by liquid magnesium at 800°C of gaseous TiCl_4+1/4C_2Cl_4 and the heat treatments in vacuum were performed for 5 hours to remove the residual magnesium and magnesium chloride mixed with produced TiC_sim0.5. The final TiC_sim0.5N_0sim0.5 particle with near 100 nm in mean size and high specific surface area of 65m2/g was obtained by nitrification under nitrogen gas at 1,150°C for 2 hrs.

• Keywords: Carbide;Nitride;Powder metallurgy;Chemical techniques;Magnesiothermic reduction;