Materials Transactions Online

Materials Transactions, Vol.58 No.03 (2017) pp.450-452
© 2017 The Japan Institute of Metals and Materials

Reassessment of Solid Solubilities and Thermodynamic Properties of Magnesium and Calcium in Silicon

Sakiko Kawanishi1 and Takeshi Yoshikawa2

1Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
2Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan

To obtain fundamental knowledge on the behavior of magnesium (Mg) and calcium (Ca) in solid silicon (Si) during solidification, the solid solubilities of Mg and Ca in Si were reinvestigated by temperature-gradient zone melting method. Solubilities were measured to be 0.0016-0.0041 mol% for Mg and 0.0006-0.0021 mol% for Ca at 1373-1623 K. The excess Gibbs energies of Mg and Ca in solid Si were determined from their solid solubilities as follows:

RT ln γ°Mg(s) in solid Si = 193,000 (± 52,000) - 69.8 (± 34) T (J/mol)

RT ln γ°Ca(s) in solid Si = 140,000 (± 35,000) - 72.6 (± 23) T (J/mol)

[doi:10.2320/matertrans.M2016323]

(Received 2016/09/14; Accepted 2016/12/05; Published 2017/02/25)

Keywords: silicon, magnesium, calcium, solid solubility, temperature-gradient zone melting

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REFERENCES

  1. K. Suzuki, T. Sugiyama, K. Takano and N. Sano: J. Jpn. Inst. Metals 54 (1990) 168-172.
  2. H. Fujiwara, J.Y. Liang, K. Takeuchi and E. Ichise: Mater. Trans., JIM 37 (1996) 923-926.
  3. H. Fujiwara, J.Y. Liang, K. Miyata, E. Ichise and R. Otsuka: J. Jpn. Inst. Metals 60 (1996) 65-71.
  4. L.A.V. Teixeira and K. Morita: ISIJ Int. 49 (2009) 783-787.
  5. K. Morita, K. Kume and N. Sano: ISIJ Int. 40 (2000) 554-560.
  6. K. Kume, K. Morita, T. Miki and N. Sano: ISIJ Int. 40 (2000) 561-566.
  7. K. Morita and T. Miki: Intermetallics 11 (2003) 1111-1117.
  8. H. Sigmund: J. Electrochem. Soc. 129 (1982) 2809-2812.
  9. W.G. Pfann: JOM 203 (1955) 961-964.
  10. B. Sopori, W. Chen, J. Madjdpur and N.M. Ravindra: J. Electron. Mater. 28 (1999) 1385-1389.
  11. H. Kobatake, H. Fukuyama, T. Tsukada and S. Awaji: Meas. Sci. Technol. 21 (2010) 025901.
  12. A.T. Dinsdale: Calphad 15 (1991) 317-425.
  13. H. Feufel, T. Gödecke, H.L. Lukas and F. Sommer: J. Alloy. Compd. 247 (1997) 31-42.
  14. J.C. Anglezio, C. Servant and I. Ansara: Calphad 18 (1994) 273-309.
  15. F.A. Trumbore: Bell Syst. Tech. J. 39 (1960) 205-233.


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