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Analysis of refining of aluminum using fractional solidification with forced convection

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Abstract

Segregation of iron atoms during refining of aluminum using the fractional solidification technique has been analyzed. The redistribution of the solute atoms was influenced by the solidification and solid/liquid interface tangential velocities. Aluminum purity increased with decreasing solidification velocity and increasing tangential velocity. The diffusion boundary thickness was inversely proportional to the square root of the tangential velocity in the cylindrical rotating system. Effects of the tangential and solidification velocities on the effective redistribution coefficient were investigated. The calculated refining curves were in good agreement with measured values.

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Authors and Affiliations

  1. M/U FAB. Department, Semiconductor R&D, Samsung Electronics, 449-200, Kyungki-do, Korea

    K.-H Kim

  2. R&E Division, POSCO Engineering & Construction Co., Ltd, Jukdo-2dong, Pohang, Korea

    S.-H Lee

  3. Division of Materials Science and Engineering, Seoul National University, 151-742, Seoul, Korea

    D.N Lee

Authors
  1. K.-H Kim
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  2. S.-H Lee
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  3. D.N Lee
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Kim, KH., Lee, SH. & Lee, D. Analysis of refining of aluminum using fractional solidification with forced convection. JMEP 5, 651–656 (1996). https://doi.org/10.1007/BF02646096

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  • DOI: https://doi.org/10.1007/BF02646096

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