R. Bolot, University of Technology Belfort-Montbeliard, Belfort cedex, France; P. C. Coddet, University of Technology Belfort-Montbeliard, Belfort Cedex, France; S. Siegmann, D. M. Leparoux, C. Schreuders, EMPA - Materials Science and Technology, Thun, Switzerland
Nanoparticles show novel properties compared to the bulk material with the same chemistry. The small size is responsible for many changes in the thermo-physical properties. Thus, there is a large interest in nanomaterials since the past five years. Inductively coupled plasma torches are used for the synthesis of nanoparticles. In the process, the precursor material is vaporized in the plasma core. In a second step, nucleation and condensation occur and form high-purity nanoparticles, the growth of which is stopped by quenching. From their low velocity and high temperature, induction plasmas are particularly adapted for this application. Numerical modelling is a good way to achieve a better knowledge and understanding of the process. In the present paper, a two-dimensional model of an inductively coupled plasma torch was developed and validated on the basis of comparisons with data obtained by some other authors. Finally, the current frequency (13.56 MHz) and pressure level (400 mbar) were adjusted for the specific conditions of nanoparticles synthesis.
Summary: In the present paper, a two-dimensional model of an inductively coupled plasma torch was developed and validated on the basis of comparisons with data obtained by some other authors. Finally, the current frequency (13.56 MHz) and pressure level (400 mbar) were adjusted for the specific conditions of nanoparticles synthesis.
