A High-Strain-Rate Alumina-Based Ceramic Composite

An alumina‐based ceramic codispersed with zirconia and mullite was synthesized with a submicron grain size. At high temperatures, steady‐state creep with very limited grain growth was achieved for samples with 40 vol% alumina, 30 vol% zirconia, and 30 vol% mullite (AZ30M30). Constant stress compress...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of the American Ceramic Society 2005-04, Vol.88 (4), p.1004-1006
Hauptverfasser:	Chen, Tiandan, Mecartney, Martha L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alumina Applied sciences Building materials. Ceramics. Glasses Ceramic industries Ceramics Cermets, ceramic and refractory composites Chemical industry and chemicals Condensed matter: structure, mechanical and thermal properties Creep Creep tests Cross-disciplinary physics: materials science rheology Exact sciences and technology Grain size High temperature Materials science Mechanical and acoustical properties of condensed matter Mechanical properties of solids Miscellaneous Other materials Physics Specific materials Strain rate Technical ceramics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An alumina‐based ceramic codispersed with zirconia and mullite was synthesized with a submicron grain size. At high temperatures, steady‐state creep with very limited grain growth was achieved for samples with 40 vol% alumina, 30 vol% zirconia, and 30 vol% mullite (AZ30M30). Constant stress compressive creep behavior of AZ30M30 showed a stress exponent of 2 and an activation energy of 880 kJ/mol. A strain rate of 0.01 s−1 was obtained for AZ30M30 at 60 MPa and 1500°C, indicating the potential for high‐strain‐rate superplasticity.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1551-2916.2005.00190.x