Effect of Gelation Process on Preparation of Aluminum Titanate Ultrafine Powder by Hydrolytic Sol-gel Method

摘要：

　　Aluminium titanate (AT) ultrafine powder was prepared via hydrolytic sol-gel (HSG) method using aluminium nitrate (Al (NO3)3·9H2O) and titanium tetrachloride (TiCl4) as precursors as well as ethanol as solvent.Water required for hydrolysis reaction was supplied by the crystal water of aluminium nitrate itself.The effect of gelation processes,i.e.reflux and solvothermal treatment,on synthesis of AT powder was investigated by means of DTA-TG,XRD,SEM,and TEM,etc.The result shows that the gelation process has significant effect on the synthesis of AT powder.By reflux process,AT powder was synthesized at 1350 oC with average particle size above 1μm and serious agglomeration.Through solvothermal treatment process,however,AT powder with average particle size less than 150 nm was prepared at 1050 oC at a relatively high synthesis rate,which is due to the refinement reactants by the solvothermal treatment.

关键词： Aluminum titanate Ultrafine powder Hydrolytic sol-gel process Gelation Process

作者: Weihui Jiang Quan Zhang Jianmin Liu Qingxia Zhu Lifeng Miao

作者单位: School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001,China;Ji School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001,China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 690-695

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）