Thermodynamic study on the effect of CaF2 on the nitrogen and carbon solubility in the CaO-Al2O3-CaF2 slag system

Il Sohn, Dong Joon Min, Joo Hyun Park

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The nitrogen and carbon solubilities in the CaO-Al2O3-CaF2 slag system at 1723K were measured to understand the effect of CaF2 on the nitrogen and carbon dissolution behaviour using thermochemical equilibration technique. The nitride capacity in the CaOsatd.-Al2O3-CaF2 system was constant until XAl(2)O(3)/XCaF(2) = 0.23, followed by decrease with an increase in XAl(2)O(3)/XCaF(2) ratio, and then showed a constant value. The carbide capacity in the CaOsatd.-Al2O3-CaF2 system also showed the similar behaviour to the nitride capacity, however, the effect of CaF2 on the activity coefficient of nitride and carbide ions showed some differences in case of XCaF(2) = 0.2. The effect of CaF2 on the activity coefficient of carbide and nitride ions would not be significant in case of CaO-rich region of XCaO/XCaF(2) = 0.31. However, CaF2 could be expected to affect the activity coefficient of each ion in case of the Al2O3-rich region, causing compensating effect of the incorporated nitride (carbide) mechanism. The relationship between nitride and carbide capacity was also discussed.

Original languageEnglish
Pages (from-to)215-220
Number of pages6
JournalSteel Research
Volume70
Issue number6
DOIs
Publication statusPublished - 1999 Jun

All Science Journal Classification (ASJC) codes

  • Metals and Alloys

Fingerprint Dive into the research topics of 'Thermodynamic study on the effect of CaF<sub>2</sub> on the nitrogen and carbon solubility in the CaO-Al<sub>2</sub>O<sub>3</sub>-CaF<sub>2</sub> slag system'. Together they form a unique fingerprint.

  • Cite this