Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500580 | Scripta Materialia | 2009 | 4 Pages |
Abstract
The influence of an alumina content (2 wt.%) on the oxidation behavior of hot-pressed α-SiC is studied. Sintering of α-SiC powder with alumina rests on the formation of a liquid phase corresponding to the eutectic composition in the SiO2–Al2O3 system. The oxidation kinetics of pure α-SiC at 1470 K under helium with an oxygen partial pressure of 0.1 Pa is linear, although silica is produced. The formation of Al-rich crystallized phase could be responsible for the slower oxidation kinetics of alumina-doped SiC.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Ludovic Charpentier, Alexandre Maître, Marianne Balat-Pichelin, Sylvie Foucaud, Fabienne Audubert,