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Published in: Glass and Ceramics 3-4/2022

27-07-2022

Na2O–CaO–SO3 Ceramics as Promising Inorganic Porogens

Authors: T. V. Safronova, T. B. Shatalova, Ya. Yu. Filippov, O. U. Toshev, A. V. Knot’ko, L. A. Vaimugin, D. V. Savchenkova

Published in: Glass and Ceramics | Issue 3-4/2022

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Abstract

Ceramics with post-firing (600 – 900°C) phase composition represented by calcium sulfate anhydrite CaSO4 and sodium calcium sulfates (Na0.8Ca0.1)2SO4 and Na6Ca(SO4)4 was obtained from a powder mixture of sodium sulfate Na2SO4 and calcium sulfate dihydrate CaSO4 ∙ 2H2O with molar ratio CaSO4 ∙ 2H2O/Na2SO4 = 1. The phase composition of the powder mixture after homogenization (in acetone) in a planetary mill included, in addition to the initial salts, hydrated sodium calcium sulfate Na4Ca(SO4)3 ∙ 2H2O. On soaking in water for 5 and 60 min the weight loss of the ceramic sample fired at 700°C was equal to 15 and 75%, respectively. Na2O–CaO–SO3 ceramics in the form of granules or complex structures obtained by means of 3D printing can be used as a removable (soluble or leachable) porogen and (or) a prototype of a porous space with specified architecture to obtain porous polymeric or inorganic materials.

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Metadata
Title
Na2O–CaO–SO3 Ceramics as Promising Inorganic Porogens
Authors
T. V. Safronova
T. B. Shatalova
Ya. Yu. Filippov
O. U. Toshev
A. V. Knot’ko
L. A. Vaimugin
D. V. Savchenkova
Publication date
27-07-2022
Publisher
Springer US
Published in
Glass and Ceramics / Issue 3-4/2022
Print ISSN: 0361-7610
Electronic ISSN: 1573-8515
DOI
https://doi.org/10.1007/s10717-022-00461-w

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