Production of Copper Nanoparticles by Electromagnetic Levitation Melting Method

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Derakhshan, Rouzbeh | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44820 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Halali, Mohammad
Abstract:
In this research Copper Nanoparticles have been synthesized by electromagnetic levitation gas condensation method which is a novel method for producing fine and pure metallic powders. Copper samples with 2 gr weight were levitated and then melted.the supersaturated vapor above the melted droplet have been cooled exerting pure argon and helium as cooling and carrier medias. To investigate the morphology and particle size of the produced nanoparticles, SEM and DLS analysis have been used and for characterizing the elements exist in the powder ,XRD analysis have been carried out.SEM images and DLS analysis of produced powder showed spherical cooper nanoparticles with narrow size distribution and XRD and AAS analysis showed pure Copper nanoparticles produced by ELGC method.58 nm particles under the argon atmosphere and 34 nm particles under the helium atmosphere were synthesized and the results showed that by increasing the temperature and gas flow rate these values can be decreased
Keywords:
Electromagnetic Levitation ; Gasphase Condensation ; Copper Nanoparticles

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