爆轰法合成纳米α-Al_2O_3粉体  

DETONATION SYNTHESIS OF NANOMETER α-Al_2O_3 POWDER

作　　者：李晓杰[1] 李瑞勇[1] 曲艳东[1] 谢兴华[1] 陈涛[1] 

机构地区：[1]大连理工大学工程力学系工业装备结构分析国家重点实验室,辽宁大连116023

出　　处：《工程爆破》2006年第1期19-21,共3页Engineering Blasting

基　　金：国家自然科学基金(10572034);辽宁省自然科学基金资助项目(20042161)

摘　　要：利用硝酸铝、尿素和炸药为原料,通过研究配比出一种类似塑性炸药的混合炸药,引爆此混合炸药,爆轰完毕得到了纳米-αAl2O3粉体。对收集到的实验粉体分别进行了高分辨率透射电镜分析、衍射分析和热分析。分析结果表明,用此法所得到的纳米-αAl2O3呈球形,颗粒尺寸分布非常均匀,每个颗粒的大小为35nm左右,晶型为单一的α型。爆轰法合成纳米-αAl2O3具有合成反应速度快、设备简单和易放大产量的优点。A mixing explosive was made with a special proportion of aluminum nitrate, carbamide and explosive. It was similar to plastic-type explosive. The nanometer a-aluminum oxide was formed by detonation of the mixing explosive. It was analyzed by means of TEM, XRD and DTA/TGA respectively. The experimentation resuits proved that the nanometer a-aluminum oxide was spheric, the distribuion of grain size was uniform, with each grain being about 35nm, and the aluminum oxide was a-aluminum oxide. The detonation synthesis of nanometerα-Al2O3 powder was of such advantages as fast reaction rate, simple equipment and flexibility in enlarging capacity.

关 键 词：混合炸药 爆轰 合成 纳米Α-AL2O3 

分 类 号：TF123.72[冶金工程—粉末冶金] TB383[冶金工程—冶金物理化学]