Effect of TiO2 on the properties of ultralow-cement alumina-spinel castables

Effect of TiO2 on the properties of ultralow-cement alumina-spinel castables An ultralow-cement castable based on the Al2O3-MgO spinel system is synthesized by the interaction of fused alumina (70%) and sintered periclase (30%) using a calcium aluminate cement (75% Al2O3) and a co-deposited gel Al(OH)3 and Mg(OH)2 as the castable bond. The addition of TiO2 and its effect on the apparent density, volume shrinkage, open porosity, and true density of sintered specimens (at 1400–1600 °C) is studied. Results of a microstructure analysis using x-ray diffractometry and scanning electron microscopy are reported. The additive TiO2 is shown to exert a positive effect on the formation of spinel and physicomechanical properties of the system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Effect of TiO2 on the properties of ultralow-cement alumina-spinel castables

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Publisher
Kluwer Academic Publishers-Consultants Bureau
Copyright
Copyright © 2006 by Springer Science+Business Media, Inc.
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.
10.1007/s11148-006-0056-3
Publisher site
See Article on Publisher Site

Abstract

An ultralow-cement castable based on the Al2O3-MgO spinel system is synthesized by the interaction of fused alumina (70%) and sintered periclase (30%) using a calcium aluminate cement (75% Al2O3) and a co-deposited gel Al(OH)3 and Mg(OH)2 as the castable bond. The addition of TiO2 and its effect on the apparent density, volume shrinkage, open porosity, and true density of sintered specimens (at 1400–1600 °C) is studied. Results of a microstructure analysis using x-ray diffractometry and scanning electron microscopy are reported. The additive TiO2 is shown to exert a positive effect on the formation of spinel and physicomechanical properties of the system.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Jun 28, 2006

References

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