Activities of Sn and Sb in Liquid Fe-S Alloy Saturated with Carbon

DOI Web Site Web Site 1 Citations 3 References

Bibliographic Information

Other Title
  • 炭素飽和溶融Fe-S合金中のSn,Sbの活量
  • タンソ ホウワ ヨウユウ Fe S ゴウキンチュウ ノ Sn Sb ノ カツリ

Search this article

Abstract

The activities of tin and antimony in liquid Fe-S alloy saturated with carbon were determined at 1673 K to 1873 K by the distribution method using liquid silver. The concentration range of tin and antimony measured in the iron melt was less than 2 mass% and that of sulfur was up to FeS saturation (about 1.9 mass% at 1673 K).<BR>The activity coefficients of tin and antimony, γ(Fe-Csat.)Sn and γ(Fe-Csat.) Sb, and the solubility of carbon, [C]sat., in iron melt measured could be empirically expressed as the function of tin, antimony and sulfur contents in liquid iron saturated with carbon and temperature as follows;<BR>log γ(Fe-Csat.)Sn=485/T+0.777-28.33 XSn-4.20 XS, <BR>log γ(Fe-Csat.)Sb=-1000/T+0.314-18.34 XSb-2.17XS, <BR>[C]sat.=2.54×10-3T+0.65-0.33[mass%S]+βM [mass%M] (mass%)<BR>βSn=-0.11, βSb=-0.12<BR>(1673K1873 K, Sn≤1.5 mass%, Sb≤1.9mass%, S<1.9 mass% (FeSsat.))<BR>The activity coefficients of SnS and SbS1.5 in FeS-Na2S flux were estimated to explain the distribution behavior of tin and antimony between the flux and liquid Fe-Csat. by combining the results of the present work with the distribution ratios of tin and antimony between FeS-Na2S flux and Fe-Csat. melt determined in our previous work.<BR>Equilibrium partial pressure of SnS in Fe-C-S-Sn melt was also estimated by using the activities of tin and sulfur and free energy of formation of SnS, and the possibility of tin removal from iron melt as SnS gas was quantitatively evaluated.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 78 (2), 245-252, 1992

    The Iron and Steel Institute of Japan

Citations (1)*help

See more

References(3)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top