Phase equilibrium study of the CaO–SiO2–CrOx system at 1600°C in reducing atmospheres

Min Chen, Pekka Taskinen, Dmitry Sukhomlinov, Daniel Lindberg*, Radoslaw Michallik, Ari Jokilaakso

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Phase equilibria in the CaO–SiO2–CrOx system were experimentally investigated at 1600°C and pO2 of 10−10 to 10−11 atm using the high-temperature isothermal equilibration/drop quenching/electron probe X-ray microanalysis technique. The constrained isothermal sections of the CaO–SiO2–CrOx system were constructed at 1600°C and pO2 of 10−10 to 10−11 atm based on the experimental results. The primary phase fields including cristobalite (SiO2), larnite (Ca2SiO4), (Ca,Cr)Cr2O4, and corundum (Cr2O3) were determined. Simulations by thermodynamic software MTDATA, FactSage, and Thermo-Calc were compared with the present experimental results.

Original languageEnglish
Pages (from-to)3436-3450
Number of pages15
JournalJournal of the American Ceramic Society
Volume107
Issue number5
Early online date22 Dec 2023
DOIs
Publication statusPublished - May 2024
MoE publication typeA1 Journal article-refereed

Keywords

  • chromium oxide
  • corrosion
  • phase stability
  • refractories
  • thermodynamics

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