Abstract
The principles of the choice of compositions applicable for the low-temperature granulate production lay the foundation of physicochemical modeling of the composition of foam glass-crystal material in Na2O-CaO-SiO2 and Na2O-Al2O3-SiO2 systems. The model composition of granulate should provide the amount of melt formed at the temperatures below 950°C, at least 75%. The amount of crystalline phase in granulate should not exceed 20%; this provides the viscosity of the system in the foaming range (800–850°C) at 103–106 Pa s. To achieve the given viscosity of melt, the foaming temperature should be increased up to 950°C. During the formation of the nanosized crystalline phase in interpore partition, the strength of the material amounts to 3 MPa. In the course of the foaming process of the crystallizing granulate, the amount of the crystalline phase achieves 50%; this provides the strength of the foam material up to 10 MPa.
Original language | English |
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Pages (from-to) | 122-126 |
Number of pages | 5 |
Journal | Glass Physics and Chemistry |
Volume | 41 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- amorphous matrix
- crystalline phase
- crystallization
- foam glass-crystal material
- low-temperature synthesis
- mechanical strength
- nanosized spheroids
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
- Condensed Matter Physics