2007 NSTI Nanotechnology Conference and Trade Show - Nanotech 2007 - 10th Annual

Synthesis and Characterization of Metallic Nanoparticles of Cu, Co and Cu-Co by Reactive Milling.

J. Angeles-Islas, C.G. Velasquez-Rodriguez and H.A. Calderon

metallic nanoparticles, reactive milling

The production of metallic nanoparticles by means of a mechanochemical process is reported. High energy mills are used. The reaction between powders and activated by ball milling involves metallic chlorides and Na in a protective NaCl environment. Such an environment hinders metallic agglomeration beyond a few nanometers producing a fine dispersion of nanoparticles. The present work includes production of nanoparticles of Co (fcc or hcp), depending on milling energy (EM) and dispersion in NaCl. Cu nanoparticles are also obtained in different sizes as a function of EM and fvNaCl. Additionally mixing the appropriate amount of metallic chlorides, alloyed nanoparticles have been produced (Cu-10 at. % Co). Further heat treatment gives rise to unmixing of Co and Cu, a fine dispersion of Co particles can be produced. It is expected that such particles can coarsen to form a core shell structure. Such experiments are in progress. The powders are characterized by X-Ray diffraction, electron microscopy, and calorimetry.

Back to Program

Sessions Sunday Monday Tuesday Wednesday Thursday Authors Keywords

Nanotech 2007 Conference Program Abstract


Names, and logos of other organizations are the property of those organizations and not of NSTI.
This event is not open to the general public and NSTI reserves the right to refuse admission and participation to any individual.