Effect of Na4O7P2 on Cu powder preparation from copper oxide slurries

Hai Tri Hoang, J. G. Ahn, D. J. Kim, J. R. Lee, C. O. Kim, H. S. Chung

研究成果: Conference contribution

抄録

In order to generate monodisperse particles system, two requirements are considered; firstly, a complete separation of nucleation and growth steps for the formation of particles; secondly, an avoidance of their aggregation during the nucleation and growth. The former would be fulfilled if a short burst nucleation is rapidly induced while the latter has been often achieved by controlling the zeta potential of particles. Sodium pyrophosphate as a surfactant was used in producing well dispersed fine copper particles from copper oxide slurries with an addition of hydrazine as a reduction agent. In the wet chemical process, it was found that the synthesized metallic copper particles contain in-situ thin oxidized surface layers, and sodium pyrophosphate significantly affects the zeta potential of the Cu surfaces. The high dispersity of the produced powders was obtained with the use of appropriate sodium pyrophosphate additions.

本文言語English
ホスト出版物のタイトルMaterials Processing Fundamentals 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting
ページ203-207
ページ数5
出版ステータスPublished - 2007 12 1
外部発表はい
イベント136th TMS Annual Meeting, 2007 - Orlando, FL, United States
継続期間: 2007 2 252007 3 1

Other

Other136th TMS Annual Meeting, 2007
国/地域United States
CityOrlando, FL
Period07/2/2507/3/1

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金

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