Role of voltage and gas in determining the mean diameter in Sn-58 Bi intermetallic compound nanoparticles for pulsed wire discharge

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• 作者：Dae Sung Kim ; Jong Hwan Kim ; Hisayuki Suematsu…
• 关键词：compounds ; thermomechanical processing ; microstructure ; scanning electron microscopy (SEM) ; Pulsed wire discharge (PWD)
• 刊名：Metals and Materials International
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：22
• 期：2
• 页码：319-323
• 全文大小：601 KB
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• 作者单位：Dae Sung Kim (1)
  Jong Hwan Kim (1)
  Hisayuki Suematsu (2)
  Kenta Tanaka (2)
  Bong Ki Ryu (1)
  
  1. Department of Materials Science and Engineering, Pusan National University, Pusan, 609-735, Korea
  2. Extreme Energy-Density Research Institute, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-2188, Japan
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials
  Operating Procedures and Materials Treatment
  
• 出版者：The Korean Institute of Metals and Materials, co-published with Springer Netherlands
• ISSN：2005-4149

文摘

Pulsed wire discharge using Sn-58 Bi wires was used to synthesize intermetallic Sn-58 Bi compound nanoparticles. We investigate that nanopowder particle size is controlled by voltage and gas atmosphere. A large pulsed current was applied to the alloy wires set between the electrodes in two gas atmosphere such as Ar, N₂. We were discussed the results based on the k factor. The k factor means E_c/E_v, where E_c and E_v are the charging energy of the capacitor and the vaporization energy of the wire. Nanoparticles whose composition was close to that of Sn-58 Bi were synthesized under N₂ atmosphere and 6 kV voltage. In such conditions, the applied energy to the wire was higher than sublimation energy of the wires. Under the other experimental conditions, other phases such as Bi-rich and Sn-Bi compound phases were detected. The major results in this study demonstrate the synthesis of alloy nano powders by using alloy wire.