At temperatures 1400 - 1450 °C silicon oxynitride powder can be produced from silica/carbon mixtures with a molar ratio 2/3 under a nitrogen flow. The conversion rate is considerably exhanced by the presence of oxide additions like CaO, BaO and SrO, which form a liquid phase with silica at the reaction temperature. The lowest temperature at which Si2N2O was observed was 1350 °C, consistent with recent thermodynamic data.
|Title of host publication||High tech ceramics : proceedings of the world congress|
|Place of Publication||Amsteradam|
|Publication status||Published - 1987|
|Name||Materials Science Monographs|