Effects of carbon and oxygen on Fe-C-O melt surface tension

Keisuke Morohoshi, Masahito Uchikoshi, Minoru Isshiki, Hiroyuki Fukuyama

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

For this study, we measured surface tension of Fe-C and Fe-C-O melts accurately under controlled carbon and oxygen activities using an oscillating droplet method with an electromagnetic levitator (EML). The results are summarized as follows. The carbon activity has no influence on the surface tension of Fe-C melt at temperatures of 1 823-2 023 K under oxygen partial pressure of 10-10 Pa. For Fe-C-O melts, the carbon activity has no influence on the surface tension at a constant oxygen partial pressure of 10-7 Pa and temperatures of 1 873-1 973 K. It is noteworthy that oxygen activity is reduced by carbon in the melt because of the negative interaction between oxygen and carbon. Considering the interaction, the surface tension of the Fe-C-O melts was formulated as a function of carbon and oxygen concentrations and temperature.

Original languageEnglish
Pages (from-to)1315-1319
Number of pages5
JournalIsij International
Volume53
Issue number8
DOIs
Publication statusPublished - 2013 Oct 9

Keywords

  • Carbon activity
  • Electromagnetic levitation
  • Fe-C-O melts
  • Gas-liquid equilibrium
  • Oscillating droplet method
  • Oxygen activity
  • Surface tension

ASJC Scopus subject areas

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

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