Membrane Porous Materials from Sialon

Membrane Porous Materials from Sialon Carbothermal reduction and simultaneous nitriding of kaolin in pressings from a mixture with graphite are used to fabricate a ceramics based on β-sialon with a porosity of 50 – 60%, a pore size of about 1 μm, and a gas permeability of about 0.04 μm2. Mercury porosimetry of one of the specimens shows a narrow size distribution of the pores with a maximum at 0.7 μm. The method used for fabricating the porous sialon is classified as reaction sintering, and the elevated permeability of the obtained sialon materials is associated with the negative volume effect of the reaction of carbonitriding of kaolin. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Membrane Porous Materials from Sialon

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by Plenum Publishing Corporation
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1023/A:1011301320402
Publisher site
See Article on Publisher Site

Abstract

Carbothermal reduction and simultaneous nitriding of kaolin in pressings from a mixture with graphite are used to fabricate a ceramics based on β-sialon with a porosity of 50 – 60%, a pore size of about 1 μm, and a gas permeability of about 0.04 μm2. Mercury porosimetry of one of the specimens shows a narrow size distribution of the pores with a maximum at 0.7 μm. The method used for fabricating the porous sialon is classified as reaction sintering, and the elevated permeability of the obtained sialon materials is associated with the negative volume effect of the reaction of carbonitriding of kaolin.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Oct 9, 2004

References

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