自悬浮定向流技术中铜纳米微粒的粒度控制研究  

Preparation and granularity control of nanosized copper particles by flow-levitation method

作　　者：韦建军[1] 唐永建[2] 吴卫东[2] 魏胜[2] 李朝阳[2] 杨向东[1] 

机构地区：[1]四川大学原子与分子物理研究所,四川成都610065 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2003年第9期869-872,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点资助课题(19989501);中国工程物理研究院基金资助课题(20020869)

摘　　要：　采用自悬浮定向流技术制备了金属铜纳米微粒,根据TEM的行貌像对样品平均粒度进行标定,并结合样品制备的条件对制备工艺进行了研究。结果表明,自悬浮定向流技术可以方便地制备出不同粒度的金属铜纳米微粒,微粒平均粒径随熔球温度的降低而减小,随冷却气体流速的增大而减小;在1200℃下微粒平均粒径随惰性气体压强的增大而减小,而在1300℃时惰性气体压强对微粒平均粒径的影响不再具有规律性。Nanosized copper particles were prepared by flow-levitation method. The analyzes based on transmission electron microscopy have been carried out in order to evaluate the average particle size of particles. The relationship between the average particle size and inert gases speed in different temperature and pressure has been established. Combining these characteristic curves, the manufacturing parameters can be obtained. The results show that the particle size of nanosized copper decreases with the decrease of the temperature of metal fused drop or with the increase of inert gas speed. To increase the inert gas pressure will decrease the average particle size at 1200°C.

关 键 词：铜纳米微粒 粒度控制 自悬浮定向流法 ICF靶材料 

分 类 号：TB383[一般工业技术—材料科学与工程]