Thermodynamics of Oxygen and Nitrogen in Liquid Fe-20mass%Cr Alloy Equilibrated with Titania-based Slags

Mikine Kishi, Ryo Inoue, Hideaki Suito

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

Equilibrium between CaO-Al2O3-TiOx or BaO-AI2O3-TiOx slags and a liquid Fe-20mass%Cr alloy with respect to oxygen and nitrogen was studied at 1 873 K as a function of Ti (or Al) content in alloys, using an Al2O3 crucible. The AI-O and Ti-AI relations in liquid alloy were studied, and nitride capacity defined by [formula omitted] was obtained from nitrogen distribution ratios, coupled with the analyzed oxygen content in liquid alloy or the PO2 determined by Ti/TiO2 equilibrium. Based on these results, activity of Al2O3 and activity coefficients of TiO2, TiO1.5 and CrO1.5 were evaluated.

Original languageEnglish
Pages (from-to)859-867
Number of pages9
JournalIsij International
Volume34
Issue number11
DOIs
Publication statusPublished - 1994

Keywords

  • Fe-Cr alloy
  • activity coefficient
  • chromium oxide
  • denitrogenization
  • redox ratio
  • titanium oxide

ASJC Scopus subject areas

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

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