Title :
Study of nanopowder production by gas-embeded electrical explosion of wire
Author :
Mao, Zhiguo ; Zou, Xiaobing ; Liu, Xiao ; Wang, Xinxin ; Jiang, Weihua
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Electrical explosion of wire (EEW) in embedded-gas is a simple and efficient method for producing nanosize powder of metal, alloy, or metal compound. In this paper, a simple EEW device is constructed. It consists of a low inductance 2 μF capacitors typically charged to 10-30 kV, a triggered gas switch, and a production chamber housing the exploding wires. With the EEW device nanosize powders of copper oxides and titanium oxides were successfully synthesized, and the effect of gas pressure on the average particle size is experimentally investigated. The synthesized powders were analyzed by X-ray diffraction, transmission electron microscopy, and BET surface area analyzer. As a result, the size of the most powders synthesized with right experimental conditions is found to be smaller than 100 nm, and the average particle size is about 50nm.
Keywords :
X-ray diffraction; capacitors; copper compounds; explosions; nanofabrication; nanoparticles; particle size; titanium compounds; transmission electron microscopy; wires; BET surface area analyzer; CuO; EEW device; TiO2; X-ray diffraction; average particle size; gas pressure; gas-embeded electrical explosion; low inductance capacitors; nanopowder production; nanosize powder; production chamber housing; transmission electron microscopy; triggered gas switch; voltage 10 kV to 30 kV; wire; Explosions; Materials; Metals; Microscopy; Powders; Shape; Wires;
Conference_Titel :
High Power Particle Beams (BEAMS), 2008 17th International Conference on
Conference_Location :
Xian
