Thermodynamic evaluation and optimization of the K <sub>2</sub> O‐Al <sub>2</sub> O <sub>3</sub> ‐SiO <sub>2</sub> system
Abstract The K 2 O‐Al 2 O 3 ‐SiO 2 system is an important component of microcrystalline glass. The K 2 O‐Al 2 O 3 and K 2 O‐SiO 2 binary systems and the K 2 O‐Al 2 O 3 ‐SiO 2 ternary system were thermodynamically evaluated and optimized using the CALculation of PHAse Diagram (CALPHAD) method. The liquid phase is described by using the ionic two‐sublattice model, and the solid solutions involved in the ternary system are all described using the compound energy formalism (CEF) model. The new parameters obtained from the optimization are capable of describing the equilibrium phase relations of the ternary system and its subsystems, and the calculated thermodynamic properties of the ternary compounds are in good agreement with the experimental data.
Authors
- Jifeng Yang
- Lideng Ye
- Libin Liu (ORCID: https://orcid.org/0000-0002-3777-1883)
- Yuling Liu (ORCID: https://orcid.org/0000-0002-5898-567X)
- Kaige Wang (ORCID: https://orcid.org/0000-0002-7851-1228)
- Yong Du (ORCID: https://orcid.org/0000-0002-4187-3989)
- Ligang Zhang (ORCID: https://orcid.org/0000-0002-6395-9230)
- Lianfeng Yan
- Guangheng Xiao
Institutions
- Central South University (CN)
Publication Details
- Journal
- Journal of the American Ceramic Society
- Published
- 2024-08-22
- DOI
- https://doi.org/10.1111/jace.20093
- Citations
- 2
- Primary Topic
- Metallurgical Processes and Thermodynamics
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- National Key Research and Development Program of China