纳米氧化铝粉体的特殊液相沉淀法制备  

Preparation of Nanometer Alumina Powders by the Special Liquid-Phase Precipitation Method

作　　者：王开明[1] 温传庚[1] 郇维亮[1] 高首山[1] 李晓奇[1] 赵颖[1] 周英彦[1] 

机构地区：[1]鞍山科技大学纳米材料研究中心,辽宁鞍山114044

出　　处：《金属功能材料》2005年第1期13-15,共3页Metallic Functional Materials

基　　金：国家自然科学基金资助项目 (5 0 2 72 0 0 2;5 0 372 0 0 1) ;国家科技部 86 3资助项目 (2 0 0 3AA30 2 130 )。

摘　　要：本文通过液相反应胶粒析出机理分析 ,首次采用快速高强度机械混合液相沉淀法技术制备了小粒径 (平均2nm)无定型氢氧化铝纳米粉体。经 12 5 0℃焙烧 ,获得α相纳米氧化铝。在制备过程中 ,采用适当的混合强度和反应液浓度可加强浆料过滤性 ,从而大大节省时间 ,得到小粒径高温相纳米氧化铝粉体。A high speed high strengt h mechanical mixture liquid-phase precipitation method was firstly a dopted by the anaiysis of nucleati on mechanism of colloid,and the di ameter of the unformed alumina pow ders,prepared by this method,is ve ry small(average 2nm).After 1250℃ sintering, α phase nanometer alumi na was obtained.In the process of preparation,the ability of filtrat ion was improved by the proper con centration of the reactant and ado ption of high strength mechanical mixture.By using this method,the t ime of preparation was saved and a small diameter nanometer alumina w as gained.

关 键 词：纳米氧化铝 粉体 铝粉 液相沉淀法 制备 粒径 胶粒 省时 焙烧 氢氧化铝 

分 类 号：TB383[一般工业技术—材料科学与工程]