Production of Magnesium Nanoparticles by Electromagnetinc Levitation Melting

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Ahmadi, Mahdi | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50161 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Halali, Mohammad
Abstract:
Electromagnetic levitation(EML) provides a process producing nanoparticles using gas condensation method. In gas condensation processes, vapor is produced by heating the sample then inert gas is applied to provide the inert atmosphere and also cool and condense the sample vapor into a nano powder to obtain a sample nanoparticle. In the EML method, rapidly alternating electromagnetic field induces eddy current in the conducting sample which will heat the sample. The current in the sample result in an induced magnetic field. Consequently, the sample droplet is heated and levitated simultaneously by an induction furnace as a generator. The sample temperature is dependent on parameters such as applied energy and generator frequency. In this research Magnesium nanoparticles was produced by electromagnetic levitation method and the influence of different parameters (copper coil, temperature, cooling gas flow, type of inert gas and pressure of process) examined. Featured properties of Magnesium nanoparticles has provided diverse applications including use in Hydrogen storage, batteries, fuel additives and medical applications
Keywords:
Magnesium ; Magnetic Nanodot ; Electromagnetic Levitation ; Gasphase Condensation ; Magnesium Nanoparticles ; Hydrogen Storage ; Nanopowder

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