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《China Powder Science and Technology》 2005-06
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Effect of Processing Parameters on Transition of Aluminum Titanate Sol to Gel

JIANG Wei-Hui 1,WEI Heng-Yong 1,LIU Jian-Jun1,XIE Xiao-Hu 1,YU Yun 2(1.School of Material Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen,333001;2.Shanghai Institute of Ceramics,CAS,Shanghai 200050,China)  
The superfine aluminum titanate powder was synthesized by sol-gel method using Al(NO3)3·9H2O and Ti(OC4H9)4 as precursors,and HOAc as chelating agent.The systematic study was made on the effect of processing parameters,such as quantity of acetic acid and ethanol,pH value and solution hydrolysis temperature,on the sol-gel transition process.Their influence mechanism was also studied.The influences of aging time on the performance of superfine Al2TiO5 powder were also investigated.The results showe that the optimum processing parameters for preparing stable sols are as follows,the mole ratio of acetic acid to tetrabutyl titanate and ethanol to aluminum nitrate respectively are 2.3∶1 and 22∶1,pH value is 2 and solution hydrolysis temperature is 30℃ while proper gel aging time is 36 h.
【Fund】: 教育部科学研究重点项目 编号:02078
【CateGory Index】: TQ174.75
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