丝电爆制备纳米颗粒的电参数对能量沉积的影响

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (3): 23-27.

丝电爆制备纳米颗粒的电参数对能量沉积的影响

张爱华¹, 马明敏¹, 朱亮²

1.兰州理工大学电气工程与信息工程学院, 甘肃兰州 730050;
2.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050

收稿日期:2018-04-05 出版日期:2020-06-28 发布日期:2020-08-19
作者简介:张爱华(1964-),女,河北永年人,教授,博导.
基金资助:
国家自然科学基金(51765038)

Effects of electrical parameters on energy deposition of nanoparticles preparation by wire electrical explosion

ZHANG Ai-hua¹, MA Ming-min¹, ZHU Liang²

1. College of Electrical and Information Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2018-04-05 Online:2020-06-28 Published:2020-08-19

摘要/Abstract

摘要： 丝电爆过程中的能量沉积直接关系到所制备的纳米颗粒的粒径分布.为研究电参数对此过程中能量沉积的影响,通过改变电极类型与气隙长度进行丝电爆实验,实验中使用高采样率的示波器采集电压电流波形,并对金属丝沉积能量与制备的纳米颗粒的粒径分布进行分析.研究结果表明:丝电爆电流中存在幅值很高的谐波成分,谐波沉积能量对金属丝总沉积能量有贡献,并能够影响所制备的纳米颗粒的平均粒径.在两类电极之间,谐波沉积能量占比与总沉积能量在使用平行电极时多于使用同轴电极时,缩短放电气隙能够减少谐波沉积能量占比和总沉积能量.使用平行电极制备的纳米颗粒的平均粒径较小,说明此条件下总沉积能量增多.

关键词: 丝电爆, 能量沉积, 电参数

Abstract: The energy deposition in the process of wire electrical explosion is directly related to the particle size distribution of prepared nanoparticles. In order to study the influence of electrical parameters on energy deposition, the electrode types and air gap lengths were adjusted to carry out the wire electrical explosion experiment. In the experiment, a high sampling rate oscilloscope was used to collect the voltage and current waveforms, and the deposition energy of the alloy wire and the particle size distribution of the prepared nanoparticles were analyzed. The results indicate that there is a harmonic component with high amplitude in the wire explosion current, and the harmonic deposition energy contributes to the total deposition energy of the wire, which can affect the average particle size of the prepared nanoparticles.Between the two types of electrodes, the ratio of harmonic deposition energy to total deposition energy is higher when parallel electrodes are used than when coaxial electrodes are used. Shortening the discharge air gap can reduce the ratio of harmonic deposition energy and reduce total deposition energy also. Investigations to particle size distribution show that the average particle size of the nanoparticles prepared by parallel electrodes is smaller, which further indicates that the total deposition energy increases in this condition.

Key words: wire electrical explosion, energy deposition, electrical parameters

中图分类号:

TG146
TF123

张爱华, 马明敏, 朱亮. 丝电爆制备纳米颗粒的电参数对能量沉积的影响[J]. 兰州理工大学学报, 2020, 46(3): 23-27.

ZHANG Ai-hua, MA Ming-min, ZHU Liang. Effects of electrical parameters on energy deposition of nanoparticles preparation by wire electrical explosion[J]. Journal of Lanzhou University of Technology, 2020, 46(3): 23-27.

参考文献

[1] 班国东,刘朝辉,叶圣天,等.新型涂覆型雷达吸波材料的研究进展 [J].表面技术,2016,45(6):140-146.
[2] 何玲,孙攀攀,董其铮,等.BaAl₁₂O₁₉∶Mn²⁺纳米发光纤维的静电纺丝法制备 [J].兰州理工大学学报,2014,40(2):31-34.
[3] 秦沛,任玉,刘丽炜,等.金属纳米颗粒等离激元共振增强非线性介质谐波的发展现状 [J].中国光学,2016,9(2):213-225.
[4] 彭楚才,王金相,刘林林.介质环境对铜丝电爆炸制备纳米粉体的影响 [J].物理学报,2015,64(7):261-266.
[5] 张永民,姚伟博,邱爱慈,等.金属丝电爆炸现象研究综述 [J].高电压技术,2018,44(7):1-12.
[6] 毛志国,邹晓兵,王新新,等.电爆金属丝产生纳米粉体 [J].强激光与粒子束,2010,22(3):691-695.
[7] SARKISOV G S,STRUVE K W,MCDANIEL D H.Effect of current rate on energy deposition into exploding metal wires in vacuum [J].Physics of Plasmas,2004,11(10):4573-4581.
[8] DUSELIS P U,VAUGHAN J A,KUSSE B R.Factors affecting energy deposition and expansion in single wire low current experiments [J].Physics of Plasmas,2004,11(8):4025-4031.
[9] 石桓通,邹晓兵,赵屾,等.并联金属丝提高电爆炸丝沉积能量的数值模拟 [J].物理学报,2014,63(14):257-263.
[10] WANG K,SHI Z Q,SHI Y J,et al.Numerical simulation of the initial plasma formation and current transfer in single-wire electrical explosion in vacuum [J].Chinese Physics B,2017,26(7):260-265.
[11] ZHOU Q,ZHANG Q G,ZHANG J,et al.Effect of circuit parameters and wire properties on exploding a copper wire in water [J].IEEE Transactions on Plasma Science,2011,39(7):1606-1612.
[12] 李兴文,晁攸闯,吴坚,等.氩气中铝金属丝电爆炸放电电流波形的研究 [J].高电压技术,2015,41(9):2888-2894.
[13] 王长利,李迅,刘晓新,等.典型炸药爆炸过程的电磁辐射实验研究 [J].兵工学报,2014,35(增刊2):188-192.
[14] 毕学松,朱亮,杨富龙.丝电爆过程的电流导入机理 [J].物理学报,2012,61(7):500-505.
[15] 杨富龙,张爱华,朱亮,等.气隙长度对气体放电式丝电爆过程的影响 [J].高电压技术,2014,40(6):1903-1908.
[16] 栗建桥,马天宝,宁建国.爆炸对自然磁场干扰机理 [J].力学学报,2018,50(5):1206-1218.