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

doi:10.1111/jace.19624

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

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

^*Corresponding author for this work

Geological Survey of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

2 Citations (Scopus)

57 Downloads (Pure)

Abstract

Phase equilibria in the CaO–SiO₂–CrO_x 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–CrO_x 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 language	English
Pages (from-to)	3436-3450
Number of pages	15
Journal	Journal of the American Ceramic Society
Volume	107
Issue number	5
Early online date	22 Dec 2023
DOIs	https://doi.org/10.1111/jace.19624
Publication status	Published - May 2024
MoE publication type	A1 Journal article-refereed

Funding

This work was financially supported by the Business Finland‐funded TOCANEM project (Grant Number: 2118452). This work utilized the Academy of Finland's RawMatTERS Finland Infrastructure (RAMI) based at Aalto University, GTK Espoo, and VTT Espoo.

Keywords

chromium oxide
corrosion
phase stability
refractories
thermodynamics

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10.1111/jace.19624Licence: CC BY

CHEM_Chen_et_al_Phase_equilibrium_2024_J_Am_Ceram_SocFinal published version, 4.1 MBLicence: CC BY

Cite this

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

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.",

keywords = "chromium oxide, corrosion, phase stability, refractories, thermodynamics",

author = "Min Chen and Pekka Taskinen and Dmitry Sukhomlinov and Daniel Lindberg and Radoslaw Michallik and Ari Jokilaakso",

note = "Funding Information: This work was financially supported by the Business Finland‐funded TOCANEM project (Grant Number: 2118452). This work utilized the Academy of Finland's RawMatTERS Finland Infrastructure (RAMI) based at Aalto University, GTK Espoo, and VTT Espoo. Publisher Copyright: {\textcopyright} 2023 The Authors. Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society.",

year = "2024",

month = may,

doi = "10.1111/jace.19624",

language = "English",

volume = "107",

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AU - Chen, Min

AU - Taskinen, Pekka

AU - Sukhomlinov, Dmitry

AU - Lindberg, Daniel

AU - Michallik, Radoslaw

AU - Jokilaakso, Ari

N1 - Funding Information: This work was financially supported by the Business Finland‐funded TOCANEM project (Grant Number: 2118452). This work utilized the Academy of Finland's RawMatTERS Finland Infrastructure (RAMI) based at Aalto University, GTK Espoo, and VTT Espoo. Publisher Copyright: © 2023 The Authors. Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society.

PY - 2024/5

Y1 - 2024/5

N2 - 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.

AB - 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.

KW - chromium oxide

KW - corrosion

KW - phase stability

KW - refractories

KW - thermodynamics

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DO - 10.1111/jace.19624

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VL - 107

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 5

ER -

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

Abstract

Funding

Keywords

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-: TOCANEM, TDM

Raw Materials Research Infrastructure

Cite this

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

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Projects

-: TOCANEM, TDM

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Raw Materials Research Infrastructure

Cite this

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