ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In order to produce monodispersed particles, two requirements are considered; they are acomplete separation of nucleation and growth steps for the formation of particles and an avoidanceof their aggregation during the nucleation and growth. In this study, a new method was presentedfor preparing narrowly size distributed copper powders from CuO slurry by wet chemical reductionwith hydrazine used as a reductant. The rapid nucleation was first induced by a very fast reductionof Pd2+ resulted from batch process. Subsequently copper species which contribute to the growth onthe formed Pdo nuclei was slowly generated by semibatch process. A complete separation betweennucleation and growth therefore was obtained, resulting in a narrow size distribution of final Cupowder product. The effect parameters on the growth such as Pd2+ concentration and temperaturewere also investigated
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.683.pdf
