Study of Combustion of Titanium Particles Aimed at Generation of TiO2 Nanoparticles.

A method is developed to produce large titanium monolithic burning particles with a diameter of 250–550 μm. The combustion of titanium particles in free fall in air is investigated. The characteristic times of the beginning of fragmentation, end of fragmentation, and end of burning as well as the laws of motion of particles (in particular, coordinate and velocity at the starting moment of fragmentation) are determined using video recording. The size of particles at which the fragmentation mode changes from "star" to "fir branch" is estimated. [ABSTRACT FROM AUTHOR]