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

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationMaterials Processing Fundamentals 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting
Number of pages5
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event136th TMS Annual Meeting, 2007 - Orlando, FL, United States
Duration: 2007 Feb 252007 Mar 1


Other136th TMS Annual Meeting, 2007
Country/TerritoryUnited States
CityOrlando, FL


  • Copper powder
  • Dispersion
  • Sodium pyrophosphate
  • Synthesis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys


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