How do ceramic fibers react with high-pressure steam at high temperatures?

Ceramic fibers, when exposed to high-pressure steam at high temperatures, typically exhibit a combination of physical and chemical reactions. Physically, the fibers may undergo thermal expansion and degradation due to the high temperatures, which can lead to a loss of mechanical strength and structural integrity. Chemically, steam can cause hydrolysis of the ceramic material, leading to the formation of new compounds and the leaching of elements. This reaction can result in a change in the fiber's composition and a reduction in its resistance to further degradation. The extent of these reactions depends on the specific type of ceramic fiber, the temperature, pressure, and duration of exposure, as well as the presence of any impurities or dopants in the fiber.