Interaction parameter between Al and Sn in molten high Al steel

Kengo Sugiyama, Shigeru Ueda, Xu Gao, Sunjoong Kim, Shinya Kitamura

Research output: Contribution to journalArticlepeer-review


Synopsis: The interaction parameter between Al and Sn in molten iron containing high Al was measured using a chemical equilibrium technique. A molten Fe-Al alloy was equilibrated with a molten Ag-Sn alloy in an Al2O3 crucible at 1823 K. The interaction parameter of Sn and Al in FeAl alloys was measured to be ϵA S n l=-3.18 while varying the concentration of Al in a range from 0.01-0.17 in mole fraction. The influence of Sn on the deoxidation equilibrium of Al and O was estimated using the above interaction parameter. The results indicate that under a constant Al concentration, a contamination of several percent of Sn slightly raises the O concentration in high Al steel.

Original languageEnglish
Pages (from-to)31-35
Number of pages5
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Issue number3
Publication statusPublished - 2019 Mar


  • Activity coefficient
  • Al
  • High Al steel
  • Interaction parameter
  • Sn

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry


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