Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/19323
Title: Cellular MgAl2O4 spinels prepared by reactive sintering of emulsified suspensions
Author: Vitorino, N.
Freitas, C.
Kovalevsky, A. V.
Abrantes, J. C. C.
Frade, J. R.
Keywords: MICROWAVE-ASSISTED COMBUSTION
POWDER
Issue Date: 2016
Publisher: ELSEVIER SCIENCE BV
Abstract: Emulsification of mixed precursor powder mixtures (Al2O3+MgCO3) and subsequent reactive firing were, for the first time, combined to prepare single phase cellular MgAl2O4 and corresponding MgxAl3-xO4 spinels with deviations, from ideal stoichiometry. Suspensions with 50% v/v solid load were emulsified in melted paraffin, with collagen additions to assist consolidation by gelcasting. Early burnout stages and firing conditions were adjusted to avoid collapse of green bodies on heating and to induce favorable microstructural changes, with emphasis on porosity and percolation. (C) 2015 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10773/19323
DOI: 10.1016/j.matlet.2015.10.169
ISSN: 0167-577X
Publisher Version: 10.1016/j.matlet.2015.10.169
Appears in Collections:CICECO - Artigos



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