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Measurement of liquid metal diffusion coefficients from steady-state solidification experiments

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Abstract

Steady state solidification experiments were carried out on Sn−Bi alloys of compositions from zero to 3.5 at. pet Bi with tube diameters from 1.9 to 5 mm. Solute profiles were determined utilizing a radioiostope, Bi207, and a microtome slicing technique. Results indicate the technique offers a relatively precise method for determining liquid metal diffusion coefficients at the solidus temperature. Convection does not appear to be a problem for tube diameters under 3 mm. It is shown that neglect of thermal transport may give errors in the measured diffusion coefficients as high as 10 to 30 pet.

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Authors and Affiliations

  1. Department of Metallurgy, Iowa State University, 50010, Ames, Iowa

    J. D. Verhoeven (Senior Metallurgist)

  2. Ames Laboratory, USERDA, Iowa State University, 50010, Ames, Iowa

    J. D. Verhoeven (Senior Metallurgist) & E. D. Gibson (Assistant Metallurgist)

Authors
  1. J. D. Verhoeven
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  2. E. D. Gibson
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  3. R. I. Griffith
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Additional information

R. I. GRIFFITH formerly Senior Technician at Ames Laboratory is now retired.

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Verhoeven, J.D., Gibson, E.D. & Griffith, R.I. Measurement of liquid metal diffusion coefficients from steady-state solidification experiments. Metall Trans B 6, 475–480 (1975). https://doi.org/10.1007/BF02913835

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  • DOI: https://doi.org/10.1007/BF02913835

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