Porous Ceramic Based on Calcium Pyrophosphate

Porous Ceramic Based on Calcium Pyrophosphate Porous ceramic, whose composition is mainly represented by calcium β-pyrophosphate β-Ca2P2O7, is prepared from a porous mixture containing synthetic calcium γ-pyrophosphate γ-Ca2P2O7 and milled 1-aqueous sodium dihydrophosphate in an amount from 2.5 to 40 wt.%. Ceramic sintering proceeds by a liquid-phase sintering mechanism due to melt formation in the system Na2O–CaO–P2O5. Ceramic microstructure after firing in the range 800 – 1000°C makes it possible to consider sodium polyphosphate not only as a component facilitating sintering by a liquid-phase mechanism, but also as an inorganic pore-forming agent. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

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Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Material Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Methods
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/s11148-015-9782-8
Publisher site
See Article on Publisher Site

Abstract

Porous ceramic, whose composition is mainly represented by calcium β-pyrophosphate β-Ca2P2O7, is prepared from a porous mixture containing synthetic calcium γ-pyrophosphate γ-Ca2P2O7 and milled 1-aqueous sodium dihydrophosphate in an amount from 2.5 to 40 wt.%. Ceramic sintering proceeds by a liquid-phase sintering mechanism due to melt formation in the system Na2O–CaO–P2O5. Ceramic microstructure after firing in the range 800 – 1000°C makes it possible to consider sodium polyphosphate not only as a component facilitating sintering by a liquid-phase mechanism, but also as an inorganic pore-forming agent.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Jun 16, 2015

References

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