气体放电式丝电爆方法制备纳米铜粉  

PREPARATION OF Cu NANOPOWDERS BY SEGMENTED METAL WIRE ELECTRICAL EXPLOSION

作　　者：毕学松[1] 朱亮[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《粉末冶金工业》2012年第4期23-25,共3页Powder Metallurgy Industry

基　　金：国家自然科学基金资助项目(51061011)

摘　　要：提出了一种气体放电式电爆方法,该方法不需要将金属丝与电极接触,靠丝端部与电极之间的气体放电导入大电流实现电爆,更便于工程上的实施。改变初始充电电压和金属丝直径进行电爆试验,分析粉末粒径与初始参数的关系,发现电容器储能大于3倍金属丝气化能时,粉末粒径分布较窄,一般在30～100nm之间,平均粒径约60nm。An experimental setup of electrical explosion of segmented metal wire, which does not need contact between metal wire and electrodes of the high voltage field, was developed. The gas discharge between electrodes and tips of the segmented wire, provide the channels of the current flow in the segmented wire for explosion . With variations of the initial charging voltage and the wire diameters, a series of experimental explosion of segmented metal wire were carried out. Results show that when the storage energy of capacitor is three times greater than the sublimation energy of the exploding material, the particle size obtained ranges from 30 to 100 nm with an average size of 60 nm.

关 键 词：气体放电式电爆 纳米粉 气体放电 电爆产物 

分 类 号：TB383.1[一般工业技术—材料科学与工程]