Preparation of Highly Porous Materials based on Refractory Clays

A porous ceramic based on clay and nonplastic aluminosilicate raw material of Uzbekistan was prepared by slip casting. Molding was conducted using a foaming agent — technical foam and sawdust, which stabilized the structure, followed by firing at 1300 – 1350°C. The effect of different fillers on the...

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Bibliographic Details
Published in:Glass and ceramics 2020-07, Vol.77 (3-4), p.87-93
Main Authors: Rumi, M. Kh, Urazaeva, E. M., Mansurova, E. P., Irmatova, Sh. K., Faiziev, Sh. A., Zufarov, M. A., Arushanov, G. M.
Format: Article
Language:English
Subjects:
Aluminosilicates
Aluminum silicates
Ceramics
Chamotte
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Fillers
Foaming agents
Glass
Materials Science
Natural Materials
Porosity
Porous materials
Raw materials
Sawdust
Sintering
Sintering (powder metallurgy)
Slip casting
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Summary:A porous ceramic based on clay and nonplastic aluminosilicate raw material of Uzbekistan was prepared by slip casting. Molding was conducted using a foaming agent — technical foam and sawdust, which stabilized the structure, followed by firing at 1300 – 1350°C. The effect of different fillers on the physical and technical properties and microstructure of the samples was studied after sintering. It was determined that ceramic with density 700 – 900 kg/m 3 and strength 1.6 – 11.0 MPa can be obtained by foam technology with foam content ranging from 15 to 25 wt.%. Porous samples with the finest grain and pore structure were obtained on the basis of Samarkand chamotte.
ISSN:0361-7610
1573-8515
DOI:10.1007/s10717-020-00246-z