No abstract

No abstract

No abstract

Porous TiC nanoparticles have been synthesised from sintered pellets comprising a powder mixture of TiO 2 and graphite by electrodeoxidation in molten CaCl 2 -NaCl eutectic. Electrolysis was conducted at 850uC in argon at an applied constant voltage of 3?1 V. The formation of TiC from the oxides/C mixture occurred at less cathodic potentials than those for electrodeoxidation of TiO 2 to titanium metal. No titanium metal was observed during electrolysis, as confirmed by XRD. These findings were consistent with the thermodynamic predictions. It was found that CaTiO 3 was formed during electrolysis and all the titanium oxides disappeared after 4 h electrolysis in a eutectic CaCl 2 -NaCl melt at 850uC, leaving CaTiO 3 /C/TiC mixtures behind at the cathode. It was also found that the formed CaTiO 3 was electrodeoxidised to form TiC by prolonged electrolysis. The present results further demonstrated that an adhesive layer of Ti 0?55 C 0?45 was formed on graphite substrates by electrodeoxidation of TiO 2 on the substrates.