摘要
无机铝盐在一定的条件下水解形成均匀透明的凝胶,凝胶经干燥、热处理后可获得粒度在亚微米级且尺寸较均一的Al_2O_3超细粉末。本文着重探讨了溶胶—凝胶法制备Al_2O_3粉末的过程中,影响制得粉末颗粒大小、团聚状态和粒度分布的诸因素。结论认为,低的铝盐浓度和成胶温度、短的成胶保温时间有利于制备颗粒细小、粒度均一的Al_2O_3超细粉末。
Submicrometric wltrafine alumina powder has been prepared throngh calcination of dried gel which was obtained via hydrolysis of nonorganic aluminum salt under a certain condition. In the present paper,the main factors affecting powder particle'size agglomerate state as well as particle size distribution during the sol -gel preparing process have been studied. It has been found that low aluminum ion concentration,low gelling temperature and short gelling time benefits the preparation of the forenamed powder.
出处
《中国陶瓷》
CAS
CSCD
北大核心
1996年第4期10-13,共4页
China Ceramics
关键词
氧化铝
超细粉末
溶胶凝胶
无机铝盐
水解
陶瓷
Alumina Ultrafine powder Sol-gel process Nonorganic aluminum salt Hydrolysis
