caa a22 4500 463234243 CHVBK 20180405153251.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1206-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1206-1 Sintering of an ultra pure α-alumina powder: I. Densification, grain growth and sintering path [Elektronische Daten] [Guillaume Bernard-Granger, Christian Guizard, Ahmed Addad] Sintering in air of an ultra pure α-alumina powder has been investigated. Isothermal experiments have been conducted on green samples shaped by slip casting. The grain growth and densification kinetics have been established. The "relative density/grain size” trajectory, called "sintering path”, has been drawn. Hypotheses concerning the mechanisms controlling grain growth and densification have been formulated. For the first time, it is shown that grain growth and densification kinetics exhibit two distinct regimes, where an initial point defect formation step plays a key role. When point defects have been generated, the diffusion of the associated Al3+ cations controls grain growth and densification. Springer Science+Business Media, LLC, 2007 Bernard-Granger Guillaume Laboratoire de Synthèse et Fonctionnalisation des Céramiques, FRE 2770 CNRS/Saint-Gobain, Saint-Gobain C.R.E.E., 84306, Cavaillon Cedex, France aut Guizard Christian Laboratoire de Synthèse et Fonctionnalisation des Céramiques, FRE 2770 CNRS/Saint-Gobain, Saint-Gobain C.R.E.E., 84306, Cavaillon Cedex, France aut Addad Ahmed Laboratoire de Structure et Propriétés de l'Etat Solide, UMR 8008 CNRS, Université des Sciences et Technologies de Lille, Bâtiment C6, 59655, Villeneuve d'Ascq Cedex, France aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6316-6324 0022-2461 42:15<6316 2007 42 10853 https://doi.org/10.1007/s10853-006-1206-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1206-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bernard-Granger Guillaume Laboratoire de Synthèse et Fonctionnalisation des Céramiques, FRE 2770 CNRS/Saint-Gobain, Saint-Gobain C.R.E.E., 84306, Cavaillon Cedex, France aut NATIONALLICENCE 700 1- Guizard Christian Laboratoire de Synthèse et Fonctionnalisation des Céramiques, FRE 2770 CNRS/Saint-Gobain, Saint-Gobain C.R.E.E., 84306, Cavaillon Cedex, France aut NATIONALLICENCE 700 1- Addad Ahmed Laboratoire de Structure et Propriétés de l'Etat Solide, UMR 8008 CNRS, Université des Sciences et Technologies de Lille, Bâtiment C6, 59655, Villeneuve d'Ascq Cedex, France aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6316-6324 0022-2461 42:15<6316 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer