MICROSTRUCTURAL EVOLUTION IN SELF-FORMING SPINEL CALCIUM ALUMINATE-BONDED CASTABLE REFRACTORIES/

Authors
FUHRER M HEY A LEE WE
Citation
M. Fuhrer et al., MICROSTRUCTURAL EVOLUTION IN SELF-FORMING SPINEL CALCIUM ALUMINATE-BONDED CASTABLE REFRACTORIES/, Journal of the European Ceramic Society, 18(7), 1998, pp. 813-820
Citations number
17
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the European Ceramic Society → ACNP
ISSN journal
09552219
Volume
18
Issue
7
Year of publication
1998
Pages
813 - 820
Database
ISI
SICI code
0955-2219(1998)18:7<813:MEISSC>2.0.ZU;2-8
Abstract
Calcium aluminate bonded alumina-spinel castable refractories have bee n fabricated with in-situ spinel formation. Spinel formation occurs be tween 1200 and 1400 degrees C with a Met-like morphology interlinked w ith CaO-MgO-Al2O3-SiO2 phases. Spinel generated at 1400 degrees C is n early stoichiometric but at higher temperatures it progessively enrich es in Al2O3. The calcium aluminate phases in the cement bond react to form platey CA(6) crystals between 1200 and 1400 degrees C which coexi st with the spinel and penetrate and bond to tabular alumina grains. T he potential effect of these morphologies on properties is discussed. (C) 1998 Elsevier Science Limited. All rights reserved.