Rödel, Jürgen ; Glaeser, Andreas M. (1990)
Anisotropy of Grain Growth in Alumina.
In: Journal of the American Ceramic Society, 73 (11)
doi: 10.1111/j.1151-2916.1990.tb06452.x
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Grain growth in theoretically dense undoped and MgO-doped polycrystalline Al2O3 was studied, and average grain-boundary migration rates were compared with those of a-plane and c-plane sapphire during migration into the same undoped and MgO-doped materials. The results are discussed in terms of a grain-size-dependent grain-boundary mobility-grain-boundary energy product, Mbγb. The grainsize dependencies of the Mbγb products for seed and matrix grains differ. Seed orientation appears to affect the nature of solute-boundary interactions. The importance of grain-boundary structure on migration characteristics is also indicated by a demonstration of twin-formation-enhanced grain growth.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1990 |
| Autor(en): | Rödel, Jürgen ; Glaeser, Andreas M. |
| Art des Eintrags: | Bibliographie |
| Titel: | Anisotropy of Grain Growth in Alumina |
| Sprache: | Englisch |
| Publikationsjahr: | November 1990 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 73 |
| (Heft-)Nummer: | 11 |
| DOI: | 10.1111/j.1151-2916.1990.tb06452.x |
| Kurzbeschreibung (Abstract): | Grain growth in theoretically dense undoped and MgO-doped polycrystalline Al2O3 was studied, and average grain-boundary migration rates were compared with those of a-plane and c-plane sapphire during migration into the same undoped and MgO-doped materials. The results are discussed in terms of a grain-size-dependent grain-boundary mobility-grain-boundary energy product, Mbγb. The grainsize dependencies of the Mbγb products for seed and matrix grains differ. Seed orientation appears to affect the nature of solute-boundary interactions. The importance of grain-boundary structure on migration characteristics is also indicated by a demonstration of twin-formation-enhanced grain growth. |
| Freie Schlagworte: | alumina; sapphire; grain growth; grain boundary; anisotropy |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 13 Jun 2012 12:07 |
| Letzte Änderung: | 05 Mär 2013 10:01 |
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