High-Temperature Thermodynamic Investigation of Nano-Dispersed Nitrides Obtained in Thermal Plasma

Abstract

The nitrides of transient metals have a high hardness, thermal stability, remarkable wear resistance in aggressive chemical mediums, melted metals and alloys, high corrosion resistance, and low coefficient of electric resistance. Under the conditions of low-temperature argon plasma (LTP), thermodynamic investigations were conducted in the process of obtaining of AlN, TiN and Si3N4 in a temperature range of 1000 K to 6000 K. To investigate the thermodynamic possibility of obtaining nitrides, a computer model was used which provided the equilibrium composition of gaseous and solid phases at different temperatures. The conditions for chemical equilibrium of the system were based on the minimization of Gibbs' energy.

MoP with rich species generated via radio frequency thermal plasma for higher alcohols synthesis from syngas

“…The development of low-temperature thermal plasma technology began in the 1960s, and most studies have focused on materials synthesis, such as the synthesis of metals and metal oxides [33][34][35][36][37][38]. Since the thermal plasma treatment has the advantages of high reaction temperature of up to 15 000 K and an ultra-fast quenching process [39][40][41][42][43][44], it is easier to use to produce nanoparticles with rich active species and defect structures, which are beneficial for the enhancement of catalytic performance.…”