Sintering and crystallization during the production of strontium-anortite glass ceramic

Саркисов, П. Д.; Орлова, Л. А.; Popovich, N. V.; Bruntsch, R.; Чайникова, А. С.; Klinkmueller, K.; Shchegoleva, N. E.

doi:10.1007/s10717-013-9468-y

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…This broad endothermic peak could have contributions from both LS and LS 2 phases because each DTA curve shows a small shoulder. Therefore, this suggests that the LS phase might have disassociated according to the reactions (5) or (6). This argument is supported by the Fig S3, where there is a reduction in the LS content in the beginning of the endothermic peak.…”

Section: Discussionsupporting

confidence: 53%

“…In most cases the sintered materials acquire a uniform microcrystalline structure with a high content of a mineral phase. In addition, compared with the classical technology, the physical–chemical properties of the materials obtained can be more stable and reproducible . However, in a glass powder compact system, a competition between crystallization and sintering will begin above the glass transition temperature ( T g ) both processes decreasing the free energy of the glass powder .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, compared with the classical technology, the physical-chemical properties of the materials obtained can be more stable and reproducible. 5 However, in a glass powder compact system, a competition between crystallization and sintering will begin above the glass transition temperature (T g ) both processes decreasing the free energy of the glass powder. 6 If the crystallization occurs before sintering is complete, further densification will be suppressed by the increased viscosity resulting in glassceramic materials with relatively poor mechanical properties due to porosity.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Al₂O₃ and B₂O₃ on Sintering and Crystallization of Lithium Silicate Glass System

et al. 2015

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This article reports on the effect of Al 2 O 3 and B 2 O 3 added as dopants on the preparation of glass-ceramics (GCs) belonging to the lithium silicate glass system. The GCs are prepared by sintering route using glass powders. The reasons for the crystallization of the metastable crystalline phase lithium metasilicate (LS) are discussed and the impact of the dopants on the thermodynamics and kinetics of crystallization is investigated. The addition of dopants modifies the thermodynamic equilibrium of the system and this change is mainly entropy driven and also slowdown the kinetics of crystallization. Differential thermal analysis and hot-stage microscopy are employed to investigate the glass-forming ability, sintering, and crystallization behavior of the studied glasses. The crystalline phase assemblage studied under nonisothermal heating conditions in the temperature range of 800°C-900°C in air. Well sintered and dense glass-ceramics are obtained after sintering of glass powders at 850°C-900°C for 1 h featuring crystalline phase assemblage dominated by lithium disilicate (LS 2 ).

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Section: Discussionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Al₂O₃ and B₂O₃ on Sintering and Crystallization of Lithium Silicate Glass System

et al. 2015

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“…While the average recycling rate was 76%, in Hungary, it had reached 35% [2]. Reusing recycled glass waste leads to significant ecological rewards, utilising fewer raw materials and reducing energy consumption and CO 2 emissions [3]. According to the study of Mallum et al [4], incorporating waste glass into construction materials can decrease production expenses while alleviating the strain on landfill sites.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance of Foam Glass Aggregate at Different Compaction Ratios

2023

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The use of glass waste in the construction industry has a high potential of leading to a higher recycling percentage. Foam glass aggregate (FGA) is around 98% recycled glass waste of various origins and has good insulation properties with big grain size distributions ranging between 10 mm and 60 mm. FGA has a wide range of applicability in the construction industry, which significantly differs from each implementation in the case of built-in conditions of the material. Therefore, investigating the impact of different compaction ratios, temperature, and relative humidity conditions on the thermal performance of such material is very important. In the present work, the samples of foam glass aggregates have been prepared with four different compaction ratios (10%, 20%, 30%, and 40%) to measure their impact on the material’s mechanical and thermal insulation properties. The obtained results revealed that the dry density property of the material linearly increased with elevated compaction ratios. In contrast, the submergence density did not follow the same trend behaviour under the same circumstances. The vertical strain of the foam glass aggregates decreased with increased compaction ratios, and a significant correlation behaviour was observed between the vertical strain and increased compaction ratios at high compressional loads. The material’s thermal conductivity increased with increasing compaction ratios in both 50% relative humidity and 95% relative humidity, while for the submergence condition, a significant decrease in their values was observed after compacting the material by 40%. The thermal conductivity is tested at 10 °C and 30 °C using the TLS and GHP methods. The thermal resistance of foam glass aggregate layers was calculated based on the measured results, showing an approximately linear decreasing trend with increasing compaction ratios. While the submerged foam glass aggregate samples demonstrated stable thermal resistance values at 30% compaction, by raising the compaction ratio to 40%, the material’s thermal resistance increased once again. The experimental results also found the temperature conversion coefficients, which can be used to convert the compacted FGA materials’ thermal conductivity to the temperature experienced in a different built-in state than the laboratory measurements. Our study demonstrates the broad usability of foam glass aggregate as a compacted thermal insulating layer in the building industry.

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Investigation of dielectric properties and microstructure of sintered 13·2Li 2 O − 67·6SiO 2 − 14.49Al 2 O 3 − 3·3TiO 2 − 0.4BaO − 0.97ZnO glass-ceramics

Savabieh

Alizadeh

Dasilva

et al. 2017

Journal of the European Ceramic Society

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Sintering and crystallization during the production of strontium-anortite glass ceramic

Cited by 6 publications

References 6 publications

Influence of Al₂O₃ and B₂O₃ on Sintering and Crystallization of Lithium Silicate Glass System

Influence of Al₂O₃ and B₂O₃ on Sintering and Crystallization of Lithium Silicate Glass System

Thermal Performance of Foam Glass Aggregate at Different Compaction Ratios

Investigation of dielectric properties and microstructure of sintered 13·2Li 2 O − 67·6SiO 2 − 14.49Al 2 O 3 − 3·3TiO 2 − 0.4BaO − 0.97ZnO glass-ceramics

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Sintering and crystallization during the production of strontium-anortite glass ceramic

Cited by 6 publications

References 6 publications

Influence of Al2O3 and B2O3 on Sintering and Crystallization of Lithium Silicate Glass System

Influence of Al2O3 and B2O3 on Sintering and Crystallization of Lithium Silicate Glass System

Thermal Performance of Foam Glass Aggregate at Different Compaction Ratios

Investigation of dielectric properties and microstructure of sintered 13·2Li 2 O − 67·6SiO 2 − 14.49Al 2 O 3 − 3·3TiO 2 − 0.4BaO − 0.97ZnO glass-ceramics

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Influence of Al₂O₃ and B₂O₃ on Sintering and Crystallization of Lithium Silicate Glass System

Influence of Al₂O₃ and B₂O₃ on Sintering and Crystallization of Lithium Silicate Glass System