Activities of Tin and Antimony in Liquid Fe-S Alloy Saturated with Carbon

Chao Wang, Tetsuya Nagasaka, Mitsutaka Hino, Shiro Ban-Ya

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The activities of tin and antimony in liquid Fe-S alloy saturated with carbon were determined at 1 673 to 1 873 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 1673K). The activity coefficients of tin and antimony, γsn and γsb 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: [formulla ometted] 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. 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.

Original languageEnglish
Pages (from-to)1336-1344
Number of pages9
JournalIsij International
Issue number11
Publication statusPublished - 1991 Jan


  • activity of antimony
  • activity of tin
  • carbon saturated liquid iron
  • carbon solubility
  • steel scrap
  • steelmaking
  • tin sulfide
  • tramp element

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


Dive into the research topics of 'Activities of Tin and Antimony in Liquid Fe-S Alloy Saturated with Carbon'. Together they form a unique fingerprint.

Cite this