Production of nanopowders by wire explosion in liquid media

Preparation of Alumina Nanoparticles by Pulsed Wire Discharge in Water

“…On the otherhand, from the previous experimental results of silver nanoparticle preparation by PWD in water, the vaporized material made a shell in water and the shell was expanded around t=3 ms. The plasma/vapor is not expanded into the water because the viscosity in water of 10 mPa·s at 20 o C and 1 atm is much higher than that in oxygen gas of 20.4 μPa·s at 20 o C and 1 atm [9]. The grain growth of particle was occurred by the collision of high temperature liquid particles or solid particles in the shell.…”

“…From the previous research of the nanoparticle preparation in liquid, silver nanoparticles were prepared by using silver wires in deionized water [8,9]. The particle size of the prepared nanoparticles could be controlled by K. Additionally, the dispersiveness of particles formed in liquid media was higher than those of the particles formed in gas.…”

Characteristics of Fe-Cr-Al Alloy Nanopowders Prepared by Electrical Wire Explosion Process under Liquid Media

“…The formation mechanism of the metal nanopowders in the EWE operated in liquid media has been well described in the literature. 31) A metal wire was installed between the highvoltage electrodes, which were connected to a capacitor bank * Corresponding author, E-mail: hyelee@kims.re.kr of 60 mF through a triggered spark gap switch. The wires were fed by a feeding roller installed on the exploding vessel and were guided by a nozzle into the vessel.…”

Synthesis and Analysis of Zn Nanopowders by Wire Explosion In Liquids

“…전기폭발에 의한 나노분말 제조기술은 펄스파워 기술이 갖는 높은 에 너지 효율 및 고순도 나노분말 제조 가능 등의 장점 을 가지고 있다 [1][2][3][4][5][6][7][8][9][10]. 액중 전기폭발 기술은 기중 전기폭발 기술에 비하여 입도 및 분산에 있어서 장점 이 있다 [11,12]. 또한 제조공정 등에 있어서 분진의 발생 등의 위험이 없으며, 분급 등의 후처리 공정도 …”