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Controlling the Growth of Cu Particles through Semibatch Process
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Controlling the Growth of Cu Particles through Semibatch Process

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Abstract:

In order to produce monodispersed particles, two requirements are considered; they are a complete separation of nucleation and growth steps for the formation of particles and an avoidance of their aggregation during the nucleation and growth. In this study, a new method was presented for preparing narrowly size distributed copper powders from CuO slurry by wet chemical reduction with hydrazine used as a reductant. The rapid nucleation was first induced by a very fast reduction of Pd2+ resulted from batch process. Subsequently copper species which contribute to the growth on the formed Pdo nuclei was slowly generated by semibatch process. A complete separation between nucleation and growth therefore was obtained, resulting in a narrow size distribution of final Cu powder product. The effect parameters on the growth such as Pd2+ concentration and temperature were also investigated.

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Recrystallization and Grain Growth III View Preview

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Periodical:

Materials Science Forum (Volumes 558-559)

Pages:

683-688

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.558-559.683

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Online since:

October 2007

Authors:

Jong Gwan Ahn, Dong Jin Kim, Y.N. Jang, Chong Oh Kim, Hun Saeng Chung, Hoang Tri Hai

Keywords:

Aggregation, Monodispersed, Secondary Cu Particle, Ultra-Fine Copper Powders

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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