Seeding with γ-Alumina for Transformation and Microstructure Control in Boehmite-Derived α-Alumina

The dehydration, transformation, and densification of boehmite (γ‐AlOOH) are enhanced by addition of γ‐Al2O3 seed particles. α‐Al2O3 microstructures with uniform 1‐ to 2‐μm grain size and sintered densities 98% of theoretical are achieved at 1300°C Thermal analysis shows that γ‐Al2O3 seed particles...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of the American Ceramic Society 1986-05, Vol.69 (5), p.C-98-C-101
Hauptverfasser:	McArdle, James L., Messing, Gary L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Exact sciences and technology Technical ceramics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The dehydration, transformation, and densification of boehmite (γ‐AlOOH) are enhanced by addition of γ‐Al2O3 seed particles. α‐Al2O3 microstructures with uniform 1‐ to 2‐μm grain size and sintered densities 98% of theoretical are achieved at 1300°C Thermal analysis shows that γ‐Al2O3 seed particles transform to α‐Al2O3 before the matrix, thus controllably nucleating the transformation of θ‐AI2O3 to α‐Al2O3.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1151-2916.1986.tb04779.x