激光辐照丙酮溶液中固体靶制备纳米碳粉  

Nanocarbon particle preparation by radiation of pulse laser on the graphite target in acetone solution

作　　者：陈岁元[1] 刘常升[1] 张雅静[1] 才庆魁[1] 

机构地区：[1]东北大学材冶学院,沈阳市110004

出　　处：《材料研究学报》2003年第5期495-498,共4页Chinese Journal of Materials Research

基　　金：国家自然科学基金 No.59972004;教育部跨世纪人才基金

摘　　要：用激光液相法制备出纳米碳粉。脉冲激光辐射靶材表面生成碳的高能等离子体团,等离子体团与丙酮溶液中的液相体系发生能量交换形成了纳米碳颗粒。用团簇成核的经典理论分析了形成纳米碳颗粒的机理。制备出的纳米碳粉大部分呈球状,少部分呈枝状形貌,为非晶或多晶态组织结构,粒径分布为20～80nm;纳米碳的颗粒大小和微观结构主要与反应温度和激光工艺参数有关。Nanocarbon particles were prepared by the radiation of YAG pulse laser on graphite target in acetone solution. The high energy carbon plasma was produced by laser radiation on the target surface, then the energy exchanged between plasma and acetone solution. Nanocarbon powder was prepared after the plasma energy died out in the solution as the laser pulse was stopped. The formation mechanism of the nanocarbon particles was discussed in terms of the classical cluster nucleation theory. Most of the nanocarbon particles prepared are of amorphous structure and ball-shaped; a small part of the nanocarbon particles are of the polymorphic structure and stick-shaped. The diameter distribution of main nanocarbon particle is from 20 to 80 nm.

关 键 词：无机非金属材料 纳米碳粉 脉冲激光 丙酮溶液 等离子团 

分 类 号：TB383[一般工业技术—材料科学与工程]