resumo
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.
palavras-chave
PARAFFIN EMULSIFIED SUSPENSIONS; CELLULAR CERAMICS; PLASTIC BEHAVIOR; ALUMINA CERAMICS; PASTES; CONSOLIDATION; TEMPERATURE; PERFORMANCE; PARAMETERS; SUPPORTS
categoria
Chemistry; Materials Science; Mineralogy
autores
Vitorino, N; Freitas, C; Ribeiro, MJ; Abrantes, JCC; Frade, JR
nossos autores
João Carlos de Castro Abrantes
Professor Adjunto
Jorge Ribeiro Frade
Professor Catedrático
Nuno Miguel Dias Vitorino
Bolseiro de pós-DoutoramentoProjectos
THERMICS- Cellular PCM-based composites with enhanced thermal conduction and shape stabilization (PTDC/CTM-ENE/2073/2012)
Centre for Research in Ceramics and Composite Materials - CICECO (LA0011: 2013-2014) (PEst-C/CTM/LA0011/2013)
agradecimentos
This work was supported by FCT, Portugal, and European funding (programs COMPETE, QREN and FEDER) under Projects PTDC/CTM-ENE/2073/2012, PEst-C/CTM/LA0011/2013, and also a Post-Doc grant SFRH/BPD/99367/2013.; SEM and XRD facilities were funded by FEDER Funds through QREN - Aviso SAIECT-IEC/2/2010, Operacao NORTE-07-0162-FEDER-000050.