Ollagnier, Jean-Baptiste ; Green, David J. ; Guillon, Olivier ; Rödel, Jürgen (2009)
Constrained Sintering of a Glass Ceramic Composite: II. Symmetric Laminate.
In: Journal of the American Ceramic Society, 92 (12)
doi: 10.1111/j.1551-2916.2009.03347.x
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The sintering behavior of symmetric laminates has been experimentally measured and modeled. Two cases are distinguished: (i) sintering of a viscous layer between viscous substrates and (ii) sintering of a viscous layer between elastic substrates. A simple model based on a persisting isotropic microstructure allowed computation of developing in-plane stresses. These in conjunction with a viscous Poisson's coefficient were taken to predict out-of-plane stresses and finally densification rate. This approach, however, proved unsuccessful to predict the large observed differences in densification rate between laminates constrained by either green or dense alumina substrates. The discrepancy was found to be due to widely different microstructures developing with different degrees of elastic constraint. Pore area and pore and particle orientation were determined to quantify these microstructural changes.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Ollagnier, Jean-Baptiste ; Green, David J. ; Guillon, Olivier ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Constrained Sintering of a Glass Ceramic Composite: II. Symmetric Laminate |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2009 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 92 |
| (Heft-)Nummer: | 12 |
| DOI: | 10.1111/j.1551-2916.2009.03347.x |
| Kurzbeschreibung (Abstract): | The sintering behavior of symmetric laminates has been experimentally measured and modeled. Two cases are distinguished: (i) sintering of a viscous layer between viscous substrates and (ii) sintering of a viscous layer between elastic substrates. A simple model based on a persisting isotropic microstructure allowed computation of developing in-plane stresses. These in conjunction with a viscous Poisson's coefficient were taken to predict out-of-plane stresses and finally densification rate. This approach, however, proved unsuccessful to predict the large observed differences in densification rate between laminates constrained by either green or dense alumina substrates. The discrepancy was found to be due to widely different microstructures developing with different degrees of elastic constraint. Pore area and pore and particle orientation were determined to quantify these microstructural changes. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 18 Mai 2011 15:20 |
| Letzte Änderung: | 26 Aug 2018 21:26 |
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