Abstract： A device for nano-particles production by auto-continuous wire electrical explosion was developed. A series of electrical explosion experiments were carried out with initial charging voltages of 5~9 kV. The prepared Ni nano-particles were characterized. The results show that the electrical explosion procedure can be realized automatically and continuously. Ni nano- particles prepared by the device are grey. The particles were approximately cube-shaped with small particle size, and were spherical or spheroidal with larger particle size. Increasing the initial charging voltage can reduce the distribution range of Ni nano-particles size effectively. When the initial charging voltage is greater than 7 kV, Ni nano-particles with average particle size of less than 30 nm and uniform particle size can be obtained.

Keywords: auto-continuous wire electrical explosion; Ni nano-particles; particle size distribution

中图分类号：TF123,TM89         文献标志码：A

文章编号：1008-5548（2014）06-0052-04

DOI:10.13732/j.issn.1008-5548.2014.06.012

收稿日期：2014-01-08， 修回日期：2014-02-09，在线出版时间：2014-12-22。

基金项目：国家自然科学基金项目，编号：51061011。

第一作者简介：王永(1987—)，男，硕士研究生，研究方向为电爆法制备纳米粉体。 E-mail：wyong1027@126.com。

通信作者简介：朱亮(1964—)，男，博士，教授，博士生导师，研究方向为焊接技术、丝电爆方法和纳米材料。 E-mail：zhul@lut.cn。