摘要
在惰性气体中采用蒸发方法制备铝超细微粉,研究不同类型气体与不同压力下超细微粉的直径和结构特点。在氩气气氛下,压力由10乇至6.4×10^(-2)乇变化时,微粉的直径分别为1200A和290A。在37乇的氦气气氛下,获得直径为100A的超微粒子,色泽乌黑,具有类似非晶的衍射花样。
Ultrafine particles of Al were prepared by means of evapo-ration in inert gas. The sizes and structure characterics of particles produced in different types of inert gases and at different pressures were studied. The diameter of the Al ultrafine particles changes from 1200rA to 290A when the argon gas pressure changes from 10Torr to 6.4 × 10^(-2)Torr. In helium gas of 37 Torr, particles with diameter of 100A were obtained. X-ray diffraction presents the pattern analogous to amorphous state.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1992年第1期116-118,共3页
Acta Scientiarum Naturalium Universitatis Sunyatseni
关键词
蒸发法
铝
超细微粉
直径
制备
evaporation
Al ultrafine particles
diameier
