Affiliation:
1. University of Belgrade
Abstract
The synthesis of solid BN in thermal plasma is investigated theoretically by computing the
equilibrium composition of a gas mixture containing boron, nitrogen, hydrogen and argon. The
calculations are done for the temperature range between 500 and 6000 K and the total pressure in
the system of 1 bar. They are based on the fact that thermal plasma is in local thermodynamic
equilibrium, which makes possible theoretical determination (by employing the Gibbs free energy
data for the compounds present in the system) of its equilibrium composition. From the calculated
compositions of investigated gas systems, the temperature zones with saturated and/or oversaturated
vapour of B and B2N are determined and the formation mechanism of BN in solid state is proposed.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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