Add to ORKGCarbothermal reduction and nitridation of pure silica have been performed to synthesize pure Si3N4 powder. Iron was used to serve as a catalyst. The reduction reaction was studied with respect to different parameters such as temperature, soaking time and gas flow rate, etc. Almost pure Si3N4 powder with predominating beta-phase could be synthesised at 1540-degrees-C. Below this temperature SiC and Si2N2O are the associated phases. SiC is unstable to Si3N4 in nitrogen atmosphere and disappears at 1540-degrees-C or under a longer holding at 1440-degrees-C. There is a critical flow rate of the nitrogen gas of 1.32 x 10(4) litre m-2 h-1, above which the yield on nitridation almost flattens. It has been suggested through thermodynamic arguments ...
Abstract. A time–temperature schedule for formation of silicon–nitride by direct nitridation of sili...
TiN-Si3N4 composite powders were prepared by carbothermal reduction nitridation using rutile and qu...
During the synthesis of SiC, Si3N 4 and sialon whiskers by carbothermal reduction of SiO 2, a locali...
beta-Si3N4 has been synthesized from quartz using carbothermal reduction and nitridation with iron a...
Carbothermal synthesis of silicon nitride Si3N4 followed by decomposition of Si3N4 is a novel approa...
The synthesis of silicon nitride (Si$ sb3$N$ sb4$) by carbothermal reduction of silica was sensitive...
Silicon nitride has been widely employed as one of the most important engineering ceramics for many ...
The synthesis of Si3N4nanowires from the reaction of silicon nanoparticles with N2in the 1200-1440°C...
The sol-gel synthesis of silicon nitride powders has been studied. The precursor gels were prepared ...
The sol-gel synthesis of silicon nitride powders has been studied. The precursor gels were prepared ...
A time-temperature schedule for formation of silicon-nitride by direct nitridation of silicon compac...
International audienceThe nitridation of a mixture of silicon and silicon carbide powders was invest...
International audienceThe nitridation of a mixture of silicon and silicon carbide powders was invest...
Si3N4-SiC micro-nano composite powder has been studied by a group of authors during the last decade....
A carbothermal reaction of silica–phenol resin hybrid gels prepared from a two-step sol–gel process ...
Abstract. A time–temperature schedule for formation of silicon–nitride by direct nitridation of sili...
TiN-Si3N4 composite powders were prepared by carbothermal reduction nitridation using rutile and qu...
During the synthesis of SiC, Si3N 4 and sialon whiskers by carbothermal reduction of SiO 2, a locali...
beta-Si3N4 has been synthesized from quartz using carbothermal reduction and nitridation with iron a...
Carbothermal synthesis of silicon nitride Si3N4 followed by decomposition of Si3N4 is a novel approa...
The synthesis of silicon nitride (Si$ sb3$N$ sb4$) by carbothermal reduction of silica was sensitive...
Silicon nitride has been widely employed as one of the most important engineering ceramics for many ...
The synthesis of Si3N4nanowires from the reaction of silicon nanoparticles with N2in the 1200-1440°C...
The sol-gel synthesis of silicon nitride powders has been studied. The precursor gels were prepared ...
The sol-gel synthesis of silicon nitride powders has been studied. The precursor gels were prepared ...
A time-temperature schedule for formation of silicon-nitride by direct nitridation of silicon compac...
International audienceThe nitridation of a mixture of silicon and silicon carbide powders was invest...
International audienceThe nitridation of a mixture of silicon and silicon carbide powders was invest...
Si3N4-SiC micro-nano composite powder has been studied by a group of authors during the last decade....
A carbothermal reaction of silica–phenol resin hybrid gels prepared from a two-step sol–gel process ...
Abstract. A time–temperature schedule for formation of silicon–nitride by direct nitridation of sili...
TiN-Si3N4 composite powders were prepared by carbothermal reduction nitridation using rutile and qu...
During the synthesis of SiC, Si3N 4 and sialon whiskers by carbothermal reduction of SiO 2, a locali...