Influence of the acrylamide-based monomer on the sintering of ceramics shaped by gelcasting
GAÜZÈRE, Laurie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Galtenco Solutions Company
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Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Galtenco Solutions Company
GAÜZÈRE, Laurie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Galtenco Solutions Company
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Galtenco Solutions Company
CARLOTTI, Stéphane
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
Open Ceramics. 2023, vol. 16, p. 100447
Elsevier
Résumé en anglais
Alumina ceramics were prepared by gelcasting, based on an in-situ polymerization that promotes the formation of homogeneous green ceramic parts and allows the preparation of complex shapes and/or large-size ceramics. The ...Lire la suite >
Alumina ceramics were prepared by gelcasting, based on an in-situ polymerization that promotes the formation of homogeneous green ceramic parts and allows the preparation of complex shapes and/or large-size ceramics. The influence of the monomer on the sintering behaviour of alumina pellets has been studied by considering three acrylamide-based monomers, i.e. acrylamide (AM), methacrylamide (MAM) and dimethylacrylamide (DMAA). Slurries with an alumina solid content of 50 vol% have been cast and pre-sintered pellets (1000 • C) with relative densities around 55% were obtained. These presintered pellets exhibit different granular packing, depending on the initial monomer used, as demonstrated by X-ray tomography, SEM and Hg porosimetry analyses. This results in significant differences in sintering behaviour, giving rise to very different final densities after 1 h sintering at 1530 • C: from 88% to 98%. This behaviour is described in terms of shrinkage rate, linked to the granular packing induced by the gelation process.< Réduire
Mots clés en anglais
Alumina
Gelcasting
Grain packing
Green microstructure
Sintering
Origine
Importé de halUnités de recherche