Phase Behavior Analysis of Low-grade Bauxite and Rutile by Carbothermal Reduction-nitridation

摘要：

　　In this study,β-Sialon/Al2O3/TiN diphase powder was synthesized using low-grade bauxite and rutile via carbothermal reduction-nitridation.The phase transitions of low-grade bauxite and rutile in the carbothermal reduction and nitridation process were analyzed by XRD,SEM and EDS.The effects of different reaction parameters such as reaction temperature,rutile addition on the phase composition and microstructure of products were analyzed.The results showed that β-Sialon/Al2O3/TiN powder was prepared using low-grade bauxite and rutile as raw materials and coke as reducing agent by carbothermal reduction-nitridation reaction in flowing nitrogen atmosphere of 0.03 MPa at 1350-1375 ℃,for 4 h.

关键词： Low-grade Bauxite Rutile CRN Phase Behavior

作者: Tao Yang Yan-gai Liu Dingyun Ye Qi Wang Zhaohui Huang Minghao Fang

作者单位: School of Materials Science and Technology,China University of Geosciences(Beijing),Beijing 100083,China

会议类型: 国际会议

会议名称: 2012 Workshop on Synthesis, Characterization and Applications of Inorganic Powders (2012年全国无机粉体制备与表征技术研讨会)

会议地点: 桂林

会议语种:英文

页码: 239-243

在线出版日期: 2012-07-16（万方平台首次上网日期，不代表论文的发表时间）