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
< Reduce
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Language
en
Article de revue
This item was published in
Open Ceramics. 2023, vol. 16, p. 100447
Elsevier
English Abstract
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 ...Read more >
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.Read less <
English Keywords
Alumina
Gelcasting
Grain packing
Green microstructure
Sintering
Origin
Hal imported