발간논문

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Vol.31, No.11, 1367 ~ 1374, 1993
Title
Preparation of Fe3O4 Powders by Microemulsion Method
신광식K . S . Shin, 조수행S . H . Cho, 강용Y . Kang, 원창환C . H . Won, 천병선B . S . Chun
Abstract
Ultrafine particles of Fe₃O₄ were prepared by means of AOT/water/cyclohexane microemulsion system. Reactants added to the microemulsion system were FeCl₃ FeCl₂ and NH₄OH solutions whose amounts of addition were controlled properly in terms of burets. From the results of this study, the available condition for the preparation of Fe₃O₄ could be described as follows : In the preparing the microemulsion system, the volume ratio of cyclohexane to water was 3.0 and the mole ratio of water to AOT was 7.0, respectively. The concentration of FeCl₃ and FeCl₂ solutions was 1.4M and that of NH₄OH was 15M. The temperature of the microemulsion system was maintained at 30℃, which was stirred continuously with the rate of 1000∼1200rpm. The available amounts of the reactants added to the microemulsion system were obtained and the combinations of the reactants suitable for the preparation of Fe₃O₄, were determined at the triangular graph within experimental conditions of this study.
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