摘要
本实验利用直流等离子体法制备了Cu纳米粉末,并系统研究了工艺参数对Cu纳米粉末粒子产率、粒径和粒径分布规律的影响。正交实验、扫描电子显微镜、产率及粒径分析结果表明:Cu纳米粉末粒子最佳制备工艺参数为电流(380±5)A、制粉室内N2气体比例为(15±2)%、风机转速为2 400～2 500r/min。在此工艺条件下获得的Cu纳米粉末粒子呈球形,Cu纳米粉末粒子粒径分布均匀,分布范围较窄,粒径约为100nm。随着N2气体比例增加,电流强度增大,Cu纳米粉末产率提高,但同时会导致Cu纳米粉末粒子平均直径增大、粒径分布变宽。然而,随着轴流风机转速的提高,Cu纳米粉末产率提高,并且Cu纳米粉末粒子平均直径减小、粒径分布变窄,这与较快的转速引起Cu棒表面原子蒸气浓度下降有关。
In this paper,Cu nano-powders were prepared by direct-current plasma.The effects of processing parameters on the productivity,particle size and particle size distribution of Cu nano-powders were studied systematically.Orthogonal experiment,scanning electron microscope,productivity and particle size analysis results showed that the optimum parameters are(380±5)A,the proportion of N2 was(15±2)%and the speed of fan was 2 400-2 500 r/min.Under the optimum parameters,Cu nano-powders were spherical and had uniform particle size distribution,narrow distribution range,and the particle size was about 100 nm.With the increasing of N 2 gas ratio and the current intensity,the productivity of Cu nano-powders increased,as well as the average diameter of Cu nano-powders,and the particle size distribution of Cu nano-powders became wider.With the speed of fan increasing,however,Cu nano-powders productivity increased,and Cu nano-powders average diameter decreased,and the particle size distribution of Cu nano-powders became narrower.
作者
阳立庚
吴小刚
郑小秋
YANG Ligeng;WU Xiaogang;ZHENG Xiaoqiu(Nanchang Cemented Carbide Liability Limited Company, Nanchang 330013;School of Mechanical and ElectronicEngineering, Jinggangshan University, Ji'an 343009)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2018年第A02期114-117,共4页
Materials Reports
基金
吉安市指导性科技计划项目(吉市科字[2015]10)
关键词
直流等离子体
Cu纳米粉
正交实验
direct-current plasma
Cu nano-powder
orthogonal experiment
