Synthesis and characterization of nanosized titanium particles by gas-phase combustion

Nanosized titanium particles are produced by gas-phase combustion under low-temperature. Combustion behavior of a TiCl4–Na mixture in a flow of argon was investigated by coflow flame method depending on the processing parameters such as burner shape, argon pressure and temperature. The nanosized titanium particles of 20–100 nm covered by a thin layer of NaCl were obtained at the flame temperatures of 510–585 °C. The optimal condition of nanosized titanium particles synthesis was found. It was established that the titanium particles are well distributed in the range of 50–80 nm sizes after the NaCl was removed by sublimation in vacuum. The formation mechanism of titanium crystal with the salt by coflow method is described.