How do ceramic fibers react with oxygen at high temperatures?

Ceramic fibers, when exposed to high temperatures in the presence of oxygen, can undergo oxidation. This reaction can lead to the formation of metal oxides if the ceramic fibers contain metal ions. The specific reaction depends on the composition of the fibers, but generally, the fibers can degrade, losing their mechanical strength and becoming more brittle. The rate of this reaction increases with temperature, and it can significantly affect the lifespan and performance of ceramic materials in high-temperature applications such as aerospace, automotive, and industrial furnaces. Proper selection of ceramic fiber materials and protective coatings can help mitigate these effects and extend the service life of components.