The Effect of Aluminum Oxide Additives on the Phase Equilibrium in Borosilicate Systems and Crystallization of Borosilicate Melts
| Autor: | T.O. Podbornykh, V.E. Eremyashev, Evgeny A. Trofimov |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Borosilicate glass Mechanical Engineering Mineralogy chemistry.chemical_element Condensed Matter Physics Silicate law.invention chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Aluminosilicate law Phase (matter) General Materials Science Absorption (chemistry) Crystallization Boron Chemical composition |
| Zdroj: | Materials Science Forum. 870:265-270 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.870.265 |
| Popis: | The effect of aluminum oxide additives on the phase relations in borosilicate glass based on the system Na2O–B2O3–SiO2 was investigated by means of the thermodynamic modeling. The phase equilibrium realized in this system was obtained using software package "FactSage" (version 6.4). The effect of aluminum oxide additives on the composition of the crystalline phases and residual melt formed during the cooling of borosilicate melts has been studied. The analysis of the diagrams has allowed establishing the regions of partial and complete melting of the substance depending on the chemical composition. The analysis allows determining the temperature of the melting process of a glassy matrix material. The combination of stable borate, silicate, mixed borosilicate, aluminosilicate and boroaluminate phases were determined for a wide range of compositions and temperatures. Boundaries of the regions formation of these phases depending on the composition and the temperature were determined. It allows assessing the prospects for absorption of elements in radioactive waste immobilization. The modeling of the crystallization melts formed in the studied systems was performed. |
| Databáze: | OpenAIRE |
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