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\n\n \n \n \n \n \n Thermodynamic optimization of the K2O-Al2O3-SiO2 system.\n \n \n \n\n\n \n Kim, D.; Konar, B.; and Jung, I.\n\n\n \n\n\n\n
Ceramics International, minor revision. 2018.\n
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@Article{Kim2018b,\n Title = {Thermodynamic optimization of the K2O-Al2O3-SiO2 system},\n Author = {Kim, Dong-Geun and Konar, Bikram and Jung, In-Ho},\n Journal = {Ceramics International},\n Year = {2018},\n Volume = {minor revision},\n\n ISSN = {0272-8842},\n Keywords = {K2O-Al2O3-SiO2; thermodynamic optimization; glass melt; glass-ceramics; refractory},\n Owner = {Dong-Geun},\n Timestamp = {2018.05.23},\n}\n\n
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\n\n \n \n \n \n \n \n Thermodynamic modeling of the K2O-Al2O3 and K2O-MgO-Al2O3 systems with emphasis on β- and βʹʹ-aluminas.\n \n \n \n \n\n\n \n Kim, D.; Moosavi-Khoonsari, E.; and Jung, I.\n\n\n \n\n\n\n
Journal of the European Ceramic Society, 38(9): 3188–3200. 2018.\n
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@Article{Kim2018a,\n Title = {Thermodynamic modeling of the K2O-Al2O3 and K2O-MgO-Al2O3 systems with emphasis on β- and βʹʹ-aluminas},\n Author = {Kim, Dong-Geun and Moosavi-Khoonsari, Elmira and Jung, In-Ho},\n Journal = {Journal of the European Ceramic Society},\n Year = {2018},\n Volume = {38},\n Number = {9},\n Pages = {3188--3200},\n\n Abstract = {A critical evaluation and thermodynamic modeling study including key phase diagram experiments was performed to investigate the K2O-Al2O3 and K2O-MgO-Al2O3 systems. For the first time, potassium β- and βʹʹ-alumina solid solutions were described using the Compound Energy Formalism with accurate cation distributions in their sublattices. From the new experimental results, the stability of potassium βʹʹ-alumina was assured up to 1600 °C. A large discrepancy reported in the literature, the eutectic temperature between KAlO2 and β-alumina in the K2O-Al2O3 system, was resolved. A set of self-consistent Gibbs energy functions for all stable phases in the K2O-MgO-Al2O3 system was obtained. As a result, any phase diagram sections and thermodynamic properties of the K2O-MgO-Al2O3 system can be calculated from the optimized Gibbs energy functions. In particular, the cation distribution in the β- and βʹʹ-alumina solid solutions is calculated depending on the non-stoichiometry of solution and temperature.},\n Doi = {10.1016/j.jeurceramsoc.2018.02.030},\n ISSN = {0955-2219},\n Keywords = {K2O-Al2O3; K2O-MgO-Al2O3; potassium beta alumina; thermodynamic optimization; equilibration/quenching experiments},\n Owner = {Dong-Geun},\n Timestamp = {2018.03.07},\n Url = {https://doi.org/10.1016/j.jeurceramsoc.2018.02.030}\n}\n\n
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\n A critical evaluation and thermodynamic modeling study including key phase diagram experiments was performed to investigate the K2O-Al2O3 and K2O-MgO-Al2O3 systems. For the first time, potassium β- and βʹʹ-alumina solid solutions were described using the Compound Energy Formalism with accurate cation distributions in their sublattices. From the new experimental results, the stability of potassium βʹʹ-alumina was assured up to 1600 °C. A large discrepancy reported in the literature, the eutectic temperature between KAlO2 and β-alumina in the K2O-Al2O3 system, was resolved. A set of self-consistent Gibbs energy functions for all stable phases in the K2O-MgO-Al2O3 system was obtained. As a result, any phase diagram sections and thermodynamic properties of the K2O-MgO-Al2O3 system can be calculated from the optimized Gibbs energy functions. In particular, the cation distribution in the β- and βʹʹ-alumina solid solutions is calculated depending on the non-stoichiometry of solution and temperature.\n
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\n\n \n \n \n \n \n Critical thermodynamic optimization of the Li2O-Al2O3-SiO2 system and its application for the thermodynamic analysis of the glass-ceramics.\n \n \n \n\n\n \n Konar, B.; Kim, D.; and Jung, I.\n\n\n \n\n\n\n
Journal of the European Ceramic Society, in press. 2018.\n
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@Article{KONAR2018b,\n Title = {Critical thermodynamic optimization of the Li2O-Al2O3-SiO2 system and its application for the thermodynamic analysis of the glass-ceramics},\n Author = {Konar, Bikram and Kim, Dong-Geun and Jung, In-Ho},\n Journal = {Journal of the European Ceramic Society},\n Year = {2018},\n Volume = {in press},\n\n Abstract = {A critical evaluation and thermodynamic optimization of all available experimental data of the Li2O-Al2O3-SiO2 system at 1 atm pressure was performed for the first time to obtain a set of consistent Gibbs energy functions of all phases in the system. The Gibbs energy of liquid oxide solution was described using the Modified Quasichemical Model with considering the formation of LiAlO2 associate component for charge compensation effect in liquid state. Various solid solutions were modeled based on their crystal structures. The obtained Gibbs energy functions can reproduce all available and reliable experimental data from 298 K to above liquidus temperatures. With the Gibbs energy description for each phase, any phase diagram and thermodynamic properties of this system and its sub-binaries can be calculated. The present thermodynamic database was applied to the thermodynamic analysis of the selective crystallization in the glass-ceramics.},\n ISSN = {0955-2219},\n Keywords = {Li2O-Al2O3-SiO2; Thermodynamic modeling; Phase diagram; Gibbs energy; Glass ceramics; Miscibility gap},\n Owner = {Dong-Geun},\n Timestamp = {2018.02.15}\n}\n\n
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\n A critical evaluation and thermodynamic optimization of all available experimental data of the Li2O-Al2O3-SiO2 system at 1 atm pressure was performed for the first time to obtain a set of consistent Gibbs energy functions of all phases in the system. The Gibbs energy of liquid oxide solution was described using the Modified Quasichemical Model with considering the formation of LiAlO2 associate component for charge compensation effect in liquid state. Various solid solutions were modeled based on their crystal structures. The obtained Gibbs energy functions can reproduce all available and reliable experimental data from 298 K to above liquidus temperatures. With the Gibbs energy description for each phase, any phase diagram and thermodynamic properties of this system and its sub-binaries can be calculated. The present thermodynamic database was applied to the thermodynamic analysis of the selective crystallization in the glass-ceramics.\n
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\n\n \n \n \n \n \n \n Coupled experimental phase diagram study and thermodynamic optimization of the Li2O–MgO–SiO2 system.\n \n \n \n \n\n\n \n Konar, B.; Kim, D.; and Jung, I.\n\n\n \n\n\n\n
Journal of the American Ceramic Society, 101(4): 1711–1726. 2018.\n
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@Article{Konar2018a,\n Title = {Coupled experimental phase diagram study and thermodynamic optimization of the Li2O–MgO–SiO2 system},\n Author = {Konar, Bikram and Kim, Dong-Geun and Jung, In-Ho},\n Journal = {Journal of the American Ceramic Society},\n Year = {2018},\n Number = {4},\n Pages = {1711--1726},\n Volume = {101},\n Doi = {10.1111/jace.15293},\n ISSN = {1551-2916},\n Keywords = {Li2MgSiO4, Li2O–MgO–SiO2, phase diagram experiments, sealed Pt crucible, thermodynamic optimization},\n Owner = {Dong-Geun},\n Timestamp = {2018.02.12},\n Url = {http://dx.doi.org/10.1111/jace.15293}\n}\n\n
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