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.
|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|
|出版ステータス||Published - 2007 12 1|
|イベント||136th TMS Annual Meeting, 2007 - Orlando, FL, United States|
継続期間: 2007 2 25 → 2007 3 1
|Other||136th TMS Annual Meeting, 2007|
|Period||07/2/25 → 07/3/1|
ASJC Scopus subject areas