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http://dx.doi.org/10.4313/JKEM.2010.23.9.736

Synthesis of Ni Nanopowder by Wire Explosion in Liquid Media  

Cho, Chu-Hyun (Industry Application Research Division, Korea Electrotechnology Research Institute)
Kang, Chung-Il (Industry Application Research Division, Korea Electrotechnology Research Institute)
Ha, Yoon-Cheol (Industry Application Research Division, Korea Electrotechnology Research Institute)
Jin, Yun-Sik (Industry Application Research Division, Korea Electrotechnology Research Institute)
Lee, Kyung-Ja (Nuclear Materials Research Division, Korea Atomic Energy Research Institute)
Rhee, Chang-Kyu (Nuclear Materials Research Division, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.23, no.9, 2010 , pp. 736-740 More about this Journal
Abstract
Nickel wires of 0.8 mm in diameter and 80 mm in length were electrically exploded in liquid media such as water, ethyl alcohol. The distribution of particle sizes was broad from a few micrometers to tens of nanometer. It was identified that the particles could be classified according to its sizes by using centrifugal separator. The powder prepared in distilled water showed mainly pure metallic Ni phase although a little oxide phase was observed. The powders prepared in ethyl alcohol showed complicated unknown phases, which is attributed to the compound of carbon in the organic liquid. This unknown phase was turned to pure metallic Ni phase after heat treatment.
Keywords
Nickel; Ni nanopowder; Pulsed power; Wire explosion in liquid; Size classification;
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