Phase relations of the MgO–SiO2–CrOx system at 1600°C in air and reducing atmospheres
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2023-10
Major/Subject
Mcode
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Language
en
Pages
14
6230-6243
6230-6243
Series
Journal of the American Ceramic Society, Volume 106, issue 10
Abstract
The equilibrium phase relations of the MgO–SiO2–CrOx system were investigated at 1600°C in air and at pO2 of 10–10 to 10–11 atm using a high-temperature isothermal equilibration technique followed by rapid quenching and direct phase composition analyses with electron probe X-ray microanalysis. Two-phase equilibria (liquid–cristobalite, liquid–spinel, liquid–corundum, and liquid–olivine) and three-phase equilibria (liquid–cristobalite–spinel, liquid–olivine–spinel, liquid–spinel–corundum, and cristobalite–spinel–corundum) were observed. The 1600°C isothermal sections at various oxygen partial pressures were constructed for the MgO–SiO2–CrOx system based on the experimentally determined liquid and solid compositions. Data from the literature and the predictions by FactSage and MTDATA software were compared with the present experimental results.Description
Funding Information: This work was partly financed by Aalto University, School of Chemical Engineering, and the TOCANEM project funded by Business Finland (grant number: 2118452). The utilization of the Academy of Finland's RawMatTERS Finland Infrastructure (RAMI) based at Aalto University, GTK Espoo, and VTT Espoo is acknowledged. Publisher Copyright: © 2023 The Authors. Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society.
Keywords
chromium oxide, electrolytic ferrochromium, phase diagram, thermodynamics, waste management
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Citation
Chen, M, Sukhomlinov, D, Taskinen, P, Tiljander, M, Lindberg, D & Jokilaakso, A 2023, ' Phase relations of the MgO–SiO 2 –CrO x system at 1600°C in air and reducing atmospheres ', Journal of the American Ceramic Society, vol. 106, no. 10, pp. 6230-6243 . https://doi.org/10.1111/jace.19207
