Abstract
Interaction of Al2O3+3% TiO2 particles of diameter in the range 50÷63 μm with the plasma jet generated by de arc plasma torch with hybrid water-argon stabilization was experimentally studied. The plasma jet and particles in the feeding region were photographed by a fast shutter CCD-camera. At spraying distance the particle velocities, temperatures, and fluxes were measured by spray diagnostic system DPV-2000. Relationship between the particles injection parameters, the way of penetration into plasma jet, the particle flux, velocities, and temperatures were investigated at different feeding conditions as well as plasma jet properties. The distribution of temperatures and velocities in particle spray have similar character, the particle flux is influenced by carrying air flow rate and the way of injection. The feeding distance has substantial effect on particle velocity, at higher feeding distance the increase of argon flow rate does not increase particle velocity.
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