Taking into account the requirements for structural–functional integration, the main
developments in high-temperature wave-transparent materials for supersonic/hypersonic …

We have examined the thermodynamics of the carbothermic reduction of metal oxides in
either nitrogen or argon atmospheres. The reaction, which is given generally by (where the …

The carbothermal nitridation synthesis of α‐Si3 N4is studied using electron microscopy
techniques (FEG/SEM and TEM) and chemical composition analysis to characterize the …

Conditions for carbothermal synthesis of α‐Si3N4 are presented with special emphasis on
the reaction temperature, C: SiO2 ratio, and precursor mixing. With pure precursors, the …

Abstract α-Silicon nitride powder of high purity has been prepared by nitriding pyrolysed rice
husk at temperatures between 1260 and 1450° C under 95% nitrogen-5% hydrogen …

Reaction of finely dispersed high-purity silica and carbon in nitrogen flow begins at
approximately 1250° C, and effective synthesis of α-silicon nitride was carried out at 1510 …

The manufacture of non-oxides by carbothermal reduction can be carried out in a variety of
ways to synthesize carbides, borides and nitrides. Carbides are manufactured by the high …

C and SiO2 of different types were mixed and heat‐treated (1410° to 1550° C), according to
a standardized temperature program, in flowing N2 at different pressures. It was found that a …

Silicon nitride (Si3N4) is currently the premier ceramic material for high-stress, high-
temperature applications such as gas turbines, turbochargers, and engine valves. The …

The temperature required for carbothermal reduction of silica—in the range 2100–2300° C—
is past the upper limit for combustion process heat. It is therefore an interesting candidate for …