Effects of Process Parameters of Ni ultrafine/nanoparticles Produced by Electromagnetic Levitational Gas Condensation Method |
Paper ID : 1429-UFGNSM-FULL |
Authors: |
Abstract: |
As an important transition metal, Ni nanoparticles have wide ranging applications in the fields of permanent magnets, magnetic fluids, magnetic recording media, solar energy absorption, fuel cell electrodes and catalysts. So the synthesis of Ni nanoparticles has attracted considerable attention. In this work, Ni ultrafine/nanoparticles with different morphologies were produced using the one-step, relatively large-scale synthesis method of electromagnetic levitational gas condensation method. The Ni vapors ascending from the high temperature levitated Ni droplet were condensed by Ar and He-20%Ar gas mixtures under atmospheric pressure. Effects of type and flow rate of the condensing gas on the size, size distribution and morphology of Ni particles were investigated. The particles were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and image analysis. The process parameters for synthesis of the crystalline Ni ultrafine and nanoparticles were determined. |
Keywords: |
Nanoparticles; Ni; Levitation melting; Electromagnetic levitational gas condensation. |
Status : Paper Accepted (Poster Presentation) |