利用高能球磨前驱体低温制备钛酸铝陶瓷粉体  

LOW TEMPERATURE PREPARATION OF Al_2TiO_5 CERAMIC POWDER VIA A MECHANICAL ACTIVATION PROCESS

作　　者：陈晓虎[1] 崔旭[1] 陈晓闽[1] 赵煌[1] 

机构地区：[1]华侨大学福建省高等学校功能材料重点实验室,泉州362021

出　　处：《陶瓷学报》2008年第4期315-319,共5页Journal of Ceramics

基　　金：国家自然科学基金资助(编号:50271027);福建省自然科学基金资助(编号:E0310021)

摘　　要：研究目的是探讨机械激活法在低温制备钛酸铝粉体中的应用可能性。采用行星球磨方式对刚玉和锐钛矿型二氧化钛混合粉体进行机械激活处理，并在1100—1300℃温度范围内进行短时热处理制备了纯度高、颗粒细小均匀的钛酸铝陶瓷粉体。研究结果表明，采用高能球磨机械激活处理，可提高粉体反应活性，降低周相反应法制备钛酸铝陶瓷的合成温度。球磨60小时的混合粉体在1300℃烧结钛酸铝的转变率可达98％。The purpose of this paper is to investigate the possibility of low temperature Al2TiO5 synthesis via a mechanical activation process. After mechanical activation for 60 hours, pure and fine Al2TiO5 powders were synthesized through post- annealing at temperature range of 1100 - 1300 ℃ using activated powders as precursor. The effect of mechanical activation on the phase transformation and grain reduction of Anatase and Corundum was investigated by X-ray diffraction （XRD）, thermal analysis （DTNTGA）. The results show that the synthesis temperature of Al2TiO5 can be reduced via mechanical activation of the mixture of Anatase and Corundum. The maximum Al2TiO5 formation ratio of 98 % can be reached in the case of activation for 60 hours and post-annealing at 1300 ℃ for 1 hour.

关 键 词：钛酸铝陶瓷 机械激活法 X射线衍射 合成粉体 

分 类 号：TQ174.75[化学工程—陶瓷工业]