Porous hollow tubes processed by extrusion of ceramic emulsions

authors	Vitorino, N; Freitas, C; Ribeiro, MJ; Abrantes, JCC; Frade, JR
nationality	International
journal	APPLIED CLAY SCIENCE
author keywords	Ceramic emulsions; Extrusion; Hollow tubes; Porous materials
keywords	PARAFFIN EMULSIFIED SUSPENSIONS; CELLULAR CERAMICS; PLASTIC BEHAVIOR; ALUMINA CERAMICS; PASTES; CONSOLIDATION; TEMPERATURE; PERFORMANCE; PARAMETERS; SUPPORTS
abstract	The processing of ceramic materials by extrusion is widely used to obtain products with constant cross section. Most of them are framed with applications as catalysis, filtration, building, fuel cells, isolators, etc., mainly if they are porous with special designed microstructural characteristics as pore size/distribution, liquid and gas permeability, mechanical properties, etc. Thus, in this work we combine a cellular ceramic preparation strategy based on a synergy of emulsification process and gel casting, with the extrusion process to obtain porous hollow tubes. Tree ceramic emulsions were extruded under different ram speeds and its effect was studied using Benbow-Bridgwater model. (C) 2014 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE BV
issn	0169-1317
year published	2015
volume	105
beginning page	60
ending page	65
digital object identifier (doi)	10.1016/j.clay.2014.12.014
web of science category	Chemistry, Physical; Materials Science, Multidisciplinary; Mineralogy
subject category	Chemistry; Materials Science; Mineralogy
unique article identifier	WOS:000350187300008