Synthesis of silicon nitride by carbothermal reduction and nitriding of silica: Control of kinetics and morphology

Review on the physicochemical treatments of rice husk for production of advanced materials

“…Reaction for carbothermal reduction and nitridation of rice husk were suggested by several investigators [252,253]. The factors which have influence on the overall reaction are characteristics of starting materials, temperature, gas flow rate and catalysts [254,255].…”

Effect of an Iron Catalyst and Process Parameters on Si-Based Ceramic Materials Synthesized From Rice Husks

“…SiC whiskers, useful in reinforcing metal matrix and ceramic matrix composites are already reported to be produced using RH [9][10][11]. The synthesis of Si 3 N 4 and the effect of seeding with α-Si 3 N 4 on the formation of α-Si 3 N 4 from SiO 2 and carbon mixture [12] and from rice husk [13] was already studied. In another study, the behavior of silica during the formation of Si 3 N 4 by carbothermal route was studied [14].…”

Short-fibre-reinforced reaction-bonded silicon nitride (RBSN) by precursor route: Processing and properties

“…This causes a so-called seeding effect 35,36 which eliminates the rate determining nucleation step during the nitridation reaction. However, full nitridation of B0 at ambient pressure is still impossible and 9.5 MPa N 2 pressure is needed to achieve practically full nitridation.…”