Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The effects of applied voltage on copper powder manufactured by electric explosion

전기폭발방식을 이용한 동(Cu) 미분 제조 및 인가전압의 영향

  • Lee, Hoo-In (Metal Recovery Group, Minerals & Materials Processing Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Won-Baek (Metal Recovery Group, Minerals & Materials Processing Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Suh, Chang-Youl (Metal Recovery Group, Minerals & Materials Processing Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Sohn, Jeong-Soo (Metal Recovery Group, Minerals & Materials Processing Division, Korea Institute of Geoscience & Mineral Resources)
  • Published : 2007.11.01
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Abstract

Wire electrical explosion(WEE) has been used for the production of fine metal particles. In WEE, electrical powder was stored and compressed into capacitor and released to produce fine particles through evaporation and condensation. In this study, the effect of applied voltage on the size of copper powders was investigated. High tension was added up to the explosion device by dividing 4 steps. At voltages lower than 5.2 kV, the fraction of powders finer than $44{\mu}m$ was almost negligible. The effectiveness of explosion increased sharply with increased voltage over 5.8 kV. At the highest voltage of 6.4 kV, more than 80% of explosion products were finer than $44{\mu}m$.

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