Phase relations of the MgO–SiO2–CrOx system at 1600°C in air and reducing atmospheres

Min Chen; Dmitry Sukhomlinov; Pekka Taskinen; Mia Tiljander; Daniel Lindberg; Ari Jokilaakso

doi:10.1111/jace.19207

Phase relations of the MgO–SiO₂–CrO_x system at 1600°C in air and reducing atmospheres

Min Chen, Dmitry Sukhomlinov, Pekka Taskinen, Mia Tiljander, Daniel Lindberg, Ari Jokilaakso^*

^*Tämän työn vastaava kirjoittaja

Geological Survey of Finland

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

4 Sitaatiot (Scopus)

56 Lataukset (Pure)

Abstrakti

The equilibrium phase relations of the MgO–SiO₂–CrO_x 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–CrO_x 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.

Alkuperäiskieli	Englanti
Sivut	6230-6243
Sivumäärä	14
Julkaisu	Journal of the American Ceramic Society
Vuosikerta	106
Numero	10
Varhainen verkossa julkaisun päivämäärä	25 toukok. 2023
DOI - pysyväislinkit	https://doi.org/10.1111/jace.19207
Tila	Julkaistu - lokak. 2023
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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10.1111/jace.19207Lisenssi: CC BY-NC-ND

CHEM_Chen_et_al_Phase_Relations_2023_J_Am_Ceram_SocFinal published version, 3,39 MBLisenssi: CC BY-NC-ND

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-: TOCANEM, TDM
Lindberg, D. (Vastuullinen tutkija)
01/09/2020 → 31/12/2023
Projekti: Business Finland: Other research funding

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Karppinen, M. (Manager)
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title = "Phase relations of the MgO–SiO2–CrOx system at 1600°C in air and reducing atmospheres",

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.",

keywords = "chromium oxide, electrolytic ferrochromium, phase diagram, thermodynamics, waste management",

author = "Min Chen and Dmitry Sukhomlinov and Pekka Taskinen and Mia Tiljander and Daniel Lindberg and Ari Jokilaakso",

note = "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: {\textcopyright} 2023 The Authors. Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society.",

year = "2023",

month = oct,

doi = "10.1111/jace.19207",

language = "English",

volume = "106",

pages = "6230--6243",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

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T1 - Phase relations of the MgO–SiO2–CrOx system at 1600°C in air and reducing atmospheres

AU - Chen, Min

AU - Sukhomlinov, Dmitry

AU - Taskinen, Pekka

AU - Tiljander, Mia

AU - Lindberg, Daniel

AU - Jokilaakso, Ari

N1 - 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.

PY - 2023/10

Y1 - 2023/10

N2 - 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.

AB - 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.

KW - chromium oxide

KW - electrolytic ferrochromium

KW - phase diagram

KW - thermodynamics

KW - waste management

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U2 - 10.1111/jace.19207

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M3 - Article

AN - SCOPUS:85160613488

SN - 0002-7820

VL - 106

SP - 6230

EP - 6243

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

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ER -

Phase relations of the MgO–SiO2–CrOx system at 1600°C in air and reducing atmospheres

Abstrakti

YK:n kestävän kehityksen tavoitteet

Pääsy asiakirjaan

Muut tiedostot ja linkit

Sormenjälki

Projektit

-: TOCANEM, TDM

Laitteet

Raaka-aineiden tutkimusinfrastruktuuri

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Phase relations of the MgO–SiO₂–CrO_x system at 1600°C in air and reducing atmospheres