Interfacial reaction between Al2O3-C refractory and Al killed steel

Y. S. Lee, S. M. Jung, D. J. Min

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In the current investigation, the thin filmmethod was employed to clarify the formation mechanism of inclusions at the interface between refractory and liquid Fe. According to the electron probe microanalysis (EPMA) mapping of the interface, a Si peak corresponding to SiO2 was significant at the interface between the refractory and Fe and a small amount of Fe oxide existed. A reacted layer was formed in a way that initially FeO enriched liquid layer was widely distributed on the Fe surface and FeO and SiO2 in the liquid layer were reduced by Al in liquid Fe to develop solid Al2O 3 enriched layer of inclusions. Some inclusions in the liquid Fe might be produced by the remaining oxygen in Ar gas which was supplied through the nozzle to prevent the adherence of inclusions onto it. Thermodynamic prediction was carried out to confirm if the oxygen partial pressure with increasing the oxygen activity on Fe surface could closely be related to the formation of reacted layer.

Original languageEnglish
Pages (from-to)286-291
Number of pages6
JournalIronmaking and Steelmaking
Volume41
Issue number4
DOIs
Publication statusPublished - 2014 May

Fingerprint

Steel
Surface chemistry
Refractory materials
Liquids
Oxygen
Electron probe microanalysis
Partial pressure
Oxides
Nozzles
Gases
Thermodynamics

All Science Journal Classification (ASJC) codes

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

Cite this

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Interfacial reaction between Al2O3-C refractory and Al killed steel. / Lee, Y. S.; Jung, S. M.; Min, D. J.

In: Ironmaking and Steelmaking, Vol. 41, No. 4, 05.2014, p. 286-291.

Research output: Contribution to journalArticle

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