Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1475045 | Journal of the European Ceramic Society | 2014 | 5 Pages |
Abstract
At ultrahigh temperatures silicon and carbon based ceramics can either decompose vociferously by reacting with oxygen, or grow a passivation scale of silica, that prevents it. We show that this transition in silicon oxycarbonitride ceramics when heated to 1500 °C in variable oxygen pressure is tied to the interfacial chemical potential, or the virtual partial pressure of carbon-monoxide at the interface, which can be sustained only when the silica layer is growing.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Kalvis Terauds, Rishi Raj,