Synthesis of nanometer alumina particles by plasma transferred arc alternative

The gas to particle conversion refers to the production of condensed particles from individual atoms or molecules in the gas phase. The particle formation is thus driven by the cooling of a supersaturated vapour. High temperatures and hence high energy sources such as hydrocarbon flames, laser beams or hot wall reactors are generally necessary. In the current work, a new and original method has been developed. A transferred arc is used to produce nanometric particles from the condensation of metallic vapours obtained by controlling the evaporation of the anode material.