Phase changes at different temperatures and holding time during the carbothermal reduction nitridation process for synthesizing SiAlON from low grade bauxite were researched by XRD,SEM and EDS.

• 采用XRD、SEM和EDS等手段 ,研究了低品位铝土矿碳热还原氮化合成SiAlON过程的相变。 结果表明 :130 0℃开始氮化 ,形成Si2 N2 O和X SiAlON ;