Papers by Keyword: Si₂N₂O

Abstract: Iron and silicon nitride powders were mixed in a certain proportion and compacted, then Fe_pure-Si₃N₄ were prepared by heating the samples in reducing atmosphere at 1100°C, 1300°C and 1500 °C, respectively. The stability of Fe_pure-Si₃N₄ prepared at different temperatures was analyzed by XRD diffraction and theoretical thermodynamics calculation. Results show that the main components of Fe_pure-Si₃N₄ at high temperatures in reducing atmosphere are Si₃N₄ and Si₂N₂O; Iron exists in Fe_pure-Si₃N₄ at 1100°C, and iron had largely converted to Fe₃Si phase at 1300°C and 1500°C, which is in accordance with the result of thermodynamic theoretical calculation.