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.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
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)
