Phase equilibria in TiO2-rich part of the MgO–CaO–TiO2 system at 1500–1600 °C

Min Chen; Xingbang Wan; Pekka Taskinen; Dmitry Sukhomlinov; Junjie Shi; Radoslaw Michallik; Ari Jokilaakso

doi:10.1016/j.ceramint.2022.03.290

Phase equilibria in TiO₂-rich part of the MgO–CaO–TiO₂ system at 1500–1600 °C

Min Chen, Xingbang Wan^*, Pekka Taskinen, Dmitry Sukhomlinov, Junjie Shi, Radoslaw Michallik, Ari Jokilaakso

^*Corresponding author for this work

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Abstract

The equilibrium phase relations of the MgO–CaO–TiO₂ system were investigated at 1500–1600 °C in air using the high-temperature isothermal equilibration of samples in platinum crucibles followed by the rapid quenching technique. The phase compositions were analyzed using an electron probe X-ray microanalyzer (EPMA). The isothermal sections at 1500 °C and 1600 °C were constructed based on the experimentally determined liquid phase compositions. The present results deviate significantly from previous observations as well as the predictions by MTDATA and FactSage using their oxide databases, in particular in the perovskite primary phase field.

Original language	English
Pages (from-to)	20116-20125
Number of pages	10
Journal	Ceramics International
Volume	48
Issue number	14
Early online date	Apr 2022
DOIs	https://doi.org/10.1016/j.ceramint.2022.03.290
Publication status	Published - 15 Jul 2022
MoE publication type	A1 Journal article-refereed

Keywords

Phase diagram
Phase equilibria
Resource efficiency
Thermodynamics
TiO
Titania-bearing slag

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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CHEM_Chen_et_al_Phase_equilibria_2022_Ceramics_InternationalFinal published version, 6.47 MBLicence: CC BY

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title = "Phase equilibria in TiO2-rich part of the MgO–CaO–TiO2 system at 1500–1600 °C",

abstract = "The equilibrium phase relations of the MgO–CaO–TiO2 system were investigated at 1500–1600 °C in air using the high-temperature isothermal equilibration of samples in platinum crucibles followed by the rapid quenching technique. The phase compositions were analyzed using an electron probe X-ray microanalyzer (EPMA). The isothermal sections at 1500 °C and 1600 °C were constructed based on the experimentally determined liquid phase compositions. The present results deviate significantly from previous observations as well as the predictions by MTDATA and FactSage using their oxide databases, in particular in the perovskite primary phase field.",

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AU - Chen, Min

AU - Wan, Xingbang

AU - Taskinen, Pekka

AU - Sukhomlinov, Dmitry

AU - Shi, Junjie

AU - Michallik, Radoslaw

AU - Jokilaakso, Ari

PY - 2022/7/15

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N2 - The equilibrium phase relations of the MgO–CaO–TiO2 system were investigated at 1500–1600 °C in air using the high-temperature isothermal equilibration of samples in platinum crucibles followed by the rapid quenching technique. The phase compositions were analyzed using an electron probe X-ray microanalyzer (EPMA). The isothermal sections at 1500 °C and 1600 °C were constructed based on the experimentally determined liquid phase compositions. The present results deviate significantly from previous observations as well as the predictions by MTDATA and FactSage using their oxide databases, in particular in the perovskite primary phase field.

AB - The equilibrium phase relations of the MgO–CaO–TiO2 system were investigated at 1500–1600 °C in air using the high-temperature isothermal equilibration of samples in platinum crucibles followed by the rapid quenching technique. The phase compositions were analyzed using an electron probe X-ray microanalyzer (EPMA). The isothermal sections at 1500 °C and 1600 °C were constructed based on the experimentally determined liquid phase compositions. The present results deviate significantly from previous observations as well as the predictions by MTDATA and FactSage using their oxide databases, in particular in the perovskite primary phase field.

KW - Phase diagram

KW - Phase equilibria

KW - Resource efficiency

KW - Thermodynamics

KW - TiO

KW - Titania-bearing slag

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Phase equilibria in TiO₂-rich part of the MgO–CaO–TiO₂ system at 1500–1600 °C

Abstract

Keywords

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Phase equilibria in TiO2-rich part of the MgO–CaO–TiO2 system at 1500–1600 °C

Abstract

Keywords

UN SDGs

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Phase equilibria in TiO₂-rich part of the MgO–CaO–TiO₂ system at 1500–1600 °C