Analysis of the Influence of Borate and Fluoride Fluxes on the Sintering of Silicate Raw Materials

The effectiveness of using borate (borax) and fluoride (sodium fluoride) fluxes in the sintering of crystalline (sand) and amorphous (diatomite) silicate raw materials was considered. The change in the density and appearance of samples with varying amounts of fluxes during their heat treatment at di...

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Bibliographic Details
Published in:Glass and ceramics 2024-07, Vol.81 (3-4), p.123-127
Main Authors: Gol’tsman, B. M., Yatsenko, E. A., Bostanov, Yu. A., Panteleeva, A. E., Smoliy, V. A., Yatsenko, V. S.
Format: Article
Language:English
Subjects:
Amorphous materials
Borax
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Density
Depolymerization
Diatomaceous earth
Fluxes
Glass
Heat treatment
Low temperature
Materials Science
Natural Materials
Raw materials
Sintering
Sodium fluoride
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Summary:The effectiveness of using borate (borax) and fluoride (sodium fluoride) fluxes in the sintering of crystalline (sand) and amorphous (diatomite) silicate raw materials was considered. The change in the density and appearance of samples with varying amounts of fluxes during their heat treatment at different temperatures was described. It was shown that the introduction of 4 wt.% of borax reduces the temperature necessary to reach a density of 1500 kg/m 3 by 100°C, and 6 wt.% of borax by 200°C. It was shown that the introduction of fluxes increases the amount of x-ray amorphous glass phase due to depolymerization of the silicon-oxygen network and the formation of a low-temperature melt.
ISSN:0361-7610
1573-8515
DOI:10.1007/s10717-024-00670-5