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Thermodynamic assessment of the MgO–Al2O3–SiO2 system

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Abstract

Thermodynamic properties of the phases in the MgO–Al2O3–SiO2 system were assessed, resulting in a set of self-consistent thermodynamic data. The two ternary compounds, cordierite and sapphirine, were optimized from subsolidus reactions. The liquid phase was described by the ionic two-sublattice model with a new species AlO2−1, yielding the formula (Al+3,Mg+2)P(AlO2−1,O−2,SiO4−4,SiO20)Q. Projection of the liquidus surface was calculated. Various isothermal and isoplethal sections were compared with the experimental data.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Royal Institute of Technology (KTH), 100 44, Stockholm, Sweden

    Huahai Mao, Malin Selleby & Bo Sundman

  2. Max-Planck-Institute fuer Metallforschung, 70569, Stuttgart, Germany

    Olga Fabrichnaya

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  1. Huahai Mao
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  2. Olga Fabrichnaya
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  4. Bo Sundman
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Correspondence to Huahai Mao.

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Mao, H., Fabrichnaya, O., Selleby, M. et al. Thermodynamic assessment of the MgO–Al2O3–SiO2 system. Journal of Materials Research 20, 975–986 (2005). https://doi.org/10.1557/JMR.2005.0123

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