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An assessment of the CaO-SiO2 system

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Abstract

An evaluation of the CaO-SiO2 system has been made using a newly developed model, a two-sublattice model for ionic solutions. Two alternatives were tested. In the first one, three anions were assumed, O−2, SiO4 −4, and SiO3 −2. In the second one, SiO3 −2 was omitted. A set of parameter values describing the Gibbs energy of the liquid phase and solid phases was fixed for each alternative by a computer-operated optimization procedure called PARROT. Satisfactory assessments were achieved over the whole phase diagram range with both alternatives. The main difference between them occurs at the monotectic point. A comparison between calculated properties and experimental data is given.

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Authors and Affiliations

  1. Royal Institute of Technology, S-100 44, Stockholm, Sweden

    Mats Hillert (Professor) & Bo Sundman (Docent of Physical Metallurgy)

  2. Wuhan Iron and Steel University, Hubei, People’s Republic of China

    Xizhen Wang

Authors
  1. Mats Hillert
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  2. Bo Sundman
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  3. Xizhen Wang
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Formerly Research Associate, Royal Institute of Technoloy

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Hillert, M., Sundman, B. & Wang, X. An assessment of the CaO-SiO2 system. Metall Trans B 21, 303–312 (1990). https://doi.org/10.1007/BF02664198

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