Effect of Temperature on the Synthesis of ZrO2-mullite Powders in Molten Sodium Sulfate

摘要：

　　ZrO2-mullite compound powders were synthesized with zircon and aluminum sulfate in molten sodium sulfate.Na2ZrSiO5 was prepared as intermediate with zircon and sodium carbonate at 900℃ for 3h.Then the mixture of resultant Na2ZrSiO5 and aluminum sulfate was heated at different temperatures in molten sodium sulfate salt.The ZrO2-Al2O3-SiO2 compound powders were obtained after washing away the solvable salts.The results showed that the compound powders synthesized at 800℃ were tetragonal ZrO2,SiO2 and Al2O3; the powders synthesized at 1000℃ were monoclinal ZrO2 and mullite.The mullite in compound powders became to decompose when the reaction temperature increased over 1100℃.

关键词： Molten salt Zircon ZrO2-mullite

作者: Boquan Zhu Xuedong Li Houzhi Wang

作者单位: The Hubei Province Key Laboratory of Ceramics and Refractories,Wuhan University of Science and Technology,Wuhan 430081,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 765-767

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）